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Supplemental Guarantor Information (Tables) | 12 Months Ended
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Nov. 30, 2017
Guarantees [Abstract] |
Condensed Consolidating Statements of Operations | Condensed Consolidating Statements of Operations (in thousands)
| Year Ended November 30, 2017
| KB Home Corporate |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total
Revenues | $ | — |  |  | $ | 3,957,267 |  |  | $ | 411,262 |  |  | $ | — |  |  | $ | 4,368,529 |
Homebuilding: |  |  |  |  |  |  |  |  |
Revenues | $ | — |  |  | $ | 3,957,267 |  |  | $ | 398,998 |  |  | $ | — |  |  | $ | 4,356,265 |
Construction and land costs | — |  |  | (3,286,891 | ) |  | (359,577 | ) |  | — |  |  | (3,646,468 | )
Selling, general and administrative expenses | (91,120 | ) |  | (293,233 | ) |  | (42,041 | ) |  | — |  |  | (426,394 | )
Operating income (loss) | (91,120 | ) |  | 377,143 |  |  | (2,620 | ) |  | — |  |  | 283,403 |
Interest income | 1,232 |  |  | 8 |  |  | — |  |  | — |  |  | 1,240 |
Interest expense | (172,102 | ) |  | (1,635 | ) |  | (3,434 | ) |  | 170,864 |  |  | (6,307 | )
Intercompany interest | 266,784 |  |  | (117,926 | ) |  | 22,006 |  |  | (170,864 | ) |  | — |
Equity in loss of unconsolidated joint ventures | — |  |  | (1,407 | ) |  | (2 | ) |  | — |  |  | (1,409 | )
Homebuilding pretax income | 4,794 |  |  | 256,183 |  |  | 15,950 |  |  | — |  |  | 276,927 |
Financial services pretax income | — |  |  | — |  |  | 13,068 |  |  | — |  |  | 13,068 |
Total pretax income | 4,794 |  |  | 256,183 |  |  | 29,018 |  |  | — |  |  | 289,995 |
Income tax expense | (8,800 | ) |  | (100,000 | ) |  | (600 | ) |  | — |  |  | (109,400 | )
Equity in net income of subsidiaries | 184,601 |  |  | — |  |  | — |  |  | (184,601 | ) |  | — |
Net income | $ | 180,595 |  |  | $ | 156,183 |  |  | $ | 28,418 |  |  | $ | (184,601 | ) |  | $ | 180,595 |
| Year Ended November 30, 2016
| KB Home Corporate |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total
Revenues | $ | — |  |  | $ | 3,169,545 |  |  | $ | 425,101 |  |  | $ | — |  |  | $ | 3,594,646 |
Homebuilding: |  |  |  |  |  |  |  |  |
Revenues | $ | — |  |  | $ | 3,169,545 |  |  | $ | 413,398 |  |  | $ | — |  |  | $ | 3,582,943 |
Construction and land costs | — |  |  | (2,661,888 | ) |  | (379,213 | ) |  | — |  |  | (3,041,101 | )
Selling, general and administrative expenses | (91,859 | ) |  | (251,384 | ) |  | (46,198 | ) |  | — |  |  | (389,441 | )
Operating income (loss) | (91,859 | ) |  | 256,273 |  |  | (12,013 | ) |  | — |  |  | 152,401 |
Interest income | 470 |  |  | 55 |  |  | 4 |  |  | — |  |  | 529 |
Interest expense | (177,329 | ) |  | (3,958 | ) |  | (3,946 | ) |  | 179,333 |  |  | (5,900 | )
Intercompany interest | 301,432 |  |  | (107,388 | ) |  | (14,711 | ) |  | (179,333 | ) |  | — |
Equity in loss of unconsolidated joint ventures | — |  |  | (2,179 | ) |  | (2 | ) |  | — |  |  | (2,181 | )
Homebuilding pretax income (loss) | 32,714 |  |  | 142,803 |  |  | (30,668 | ) |  | — |  |  | 144,849 |
Financial services pretax income | — |  |  | — |  |  | 4,466 |  |  | — |  |  | 4,466 |
Total pretax income (loss) | 32,714 |  |  | 142,803 |  |  | (26,202 | ) |  | — |  |  | 149,315 |
Income tax benefit (expense) | 17,200 |  |  | (52,700 | ) |  | (8,200 | ) |  | — |  |  | (43,700 | )
Equity in net income of subsidiaries | 55,701 |  |  | — |  |  | — |  |  | (55,701 | ) |  | — |
Net income (loss) | $ | 105,615 |  |  | $ | 90,103 |  |  | $ | (34,402 | ) |  | $ | (55,701 | ) |  | $ | 105,615 |
| Year Ended November 30, 2015
| KB Home Corporate |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total
Revenues | $ | — |  |  | $ | 2,640,678 |  |  | $ | 391,352 |  |  | $ | — |  |  | $ | 3,032,030 |
Homebuilding: |  |  |  |  |  |  |  |  |
Revenues | $ | — |  |  | $ | 2,640,678 |  |  | $ | 380,309 |  |  | $ | — |  |  | $ | 3,020,987 |
Construction and land costs | — |  |  | (2,196,228 | ) |  | (343,140 | ) |  | — |  |  | (2,539,368 | )
Selling, general and administrative expenses | (86,053 | ) |  | (213,292 | ) |  | (43,653 | ) |  | — |  |  | (342,998 | )
Operating income (loss) | (86,053 | ) |  | 231,158 |  |  | (6,484 | ) |  | — |  |  | 138,621 |
Interest income | 451 |  |  | 6 |  |  | 1 |  |  | — |  |  | 458 |
Interest expense | (180,701 | ) |  | (6,184 | ) |  | — |  |  | 165,029 |  |  | (21,856 | )
Intercompany interest | 289,727 |  |  | (101,540 | ) |  | (23,158 | ) |  | (165,029 | ) |  | — |
Equity in loss of unconsolidated joint ventures | — |  |  | (1,803 | ) |  | (1 | ) |  | — |  |  | (1,804 | )
Homebuilding pretax income (loss) | 23,424 |  |  | 121,637 |  |  | (29,642 | ) |  | — |  |  | 115,419 |
Financial services pretax income | — |  |  | — |  |  | 11,624 |  |  | — |  |  | 11,624 |
Total pretax income (loss) | 23,424 |  |  | 121,637 |  |  | (18,018 | ) |  | — |  |  | 127,043 |
Income tax benefit (expense) | 2,000 |  |  | (46,700 | ) |  | 2,300 |  |  | — |  |  | (42,400 | )
Equity in net income of subsidiaries | 59,219 |  |  | — |  |  | — |  |  | (59,219 | ) |  | — |
Net income (loss) | $ | 84,643 |  |  | $ | 74,937 |  |  | $ | (15,718 | ) |  | $ | (59,219 | ) |  | $ | 84,643 |
Condensed Consolidating Statements of Comprehensive Income (Loss) | Condensed Consolidating Statements of Comprehensive Income (Loss) (in thousands)
| Year Ended November 30, 2017
| KB Home Corporate |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total
Net income | $ | 180,595 |  |  | $ | 156,183 |  |  | $ | 28,418 |  |  | $ | (184,601 | ) |  | $ | 180,595 |
Other comprehensive loss: |  |  |  |  |  |  |  |  |
Postretirement benefit plan adjustments | (1,445 | ) |  | — |  |  | — |  |  | — |  |  | (1,445 | )
Other comprehensive loss before tax | (1,445 | ) |  | — |  |  | — |  |  | — |  |  | (1,445 | )
Income tax benefit related to items of other comprehensive loss | 578 |  |  | — |  |  | — |  |  | — |  |  | 578 |
Other comprehensive loss, net of tax | (867 | ) |  | — |  |  | — |  |  | — |  |  | (867 | )
Comprehensive income | $ | 179,728 |  |  | $ | 156,183 |  |  | $ | 28,418 |  |  | $ | (184,601 | ) |  | $ | 179,728 |
| Year Ended November 30, 2016
| KB Home Corporate |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total
Net income (loss) | $ | 105,615 |  |  | $ | 90,103 |  |  | $ | (34,402 | ) |  | $ | (55,701 | ) |  | $ | 105,615 |
Other comprehensive income: |  |  |  |  |  |  |  |  |
Postretirement benefit plan adjustments | 2,103 |  |  | — |  |  | — |  |  | — |  |  | 2,103 |
Other comprehensive income before tax | 2,103 |  |  | — |  |  | — |  |  | — |  |  | 2,103 |
Income tax expense related to items of other comprehensive income | (841 | ) |  | — |  |  | — |  |  | — |  |  | (841 | )
Other comprehensive income, net of tax | 1,262 |  |  | — |  |  | — |  |  | — |  |  | 1,262 |
Comprehensive income (loss) | $ | 106,877 |  |  | $ | 90,103 |  |  | $ | (34,402 | ) |  | $ | (55,701 | ) |  | $ | 106,877 |
| Year Ended November 30, 2015
| KB Home Corporate |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total
Net income (loss) | $ | 84,643 |  |  | $ | 74,937 |  |  | $ | (15,718 | ) |  | $ | (59,219 | ) |  | $ | 84,643 |
Other comprehensive income: |  |  |  |  |  |  |  |  |
Postretirement benefit plan adjustments | 6,149 |  |  | — |  |  | — |  |  | — |  |  | 6,149 |
Other comprehensive income before tax | 6,149 |  |  | — |  |  | — |  |  | — |  |  | 6,149 |
Income tax expense related to items of other comprehensive income | (2,460 | ) |  | — |  |  | — |  |  | — |  |  | (2,460 | )
Other comprehensive income, net of tax | 3,689 |  |  | — |  |  | — |  |  | — |  |  | 3,689 |
Comprehensive income (loss) | $ | 88,332 |  |  | $ | 74,937 |  |  | $ | (15,718 | ) |  | $ | (59,219 | ) |  | $ | 88,332 |
Condensed Consolidating Balance Sheets | Condensed Consolidating Balance Sheets (in thousands)
| November 30, 2017
| KB Home Corporate |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total
Assets |  |  |  |  |  |  |  |  |
Homebuilding: |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 575,193 |  |  | $ | 102,661 |  |  | $ | 42,776 |  |  | $ | — |  |  | $ | 720,630 |
Receivables | 24,815 |  |  | 144,076 |  |  | 75,322 |  |  | — |  |  | 244,213 |
Inventories | — |  |  | 2,929,466 |  |  | 333,920 |  |  | — |  |  | 3,263,386 |
Investments in unconsolidated joint ventures | — |  |  | 62,290 |  |  | 2,504 |  |  | — |  |  | 64,794 |
Deferred tax assets, net | 250,747 |  |  | 243,523 |  |  | 139,367 |  |  | — |  |  | 633,637 |
Other assets | 91,592 |  |  | 8,424 |  |  | 2,482 |  |  | — |  |  | 102,498 |
| 942,347 |  |  | 3,490,440 |  |  | 596,371 |  |  | — |  |  | 5,029,158 |
Financial services | — |  |  | — |  |  | 12,357 |  |  | — |  |  | 12,357 |
Intercompany receivables | 3,414,237 |  |  | — |  |  | 107,992 |  |  | (3,522,229 | ) |  | — |
Investments in subsidiaries | 49,776 |  |  | — |  |  | — |  |  | (49,776 | ) |  | — |
Total assets | $ | 4,406,360 |  |  | $ | 3,490,440 |  |  | $ | 716,720 |  |  | $ | (3,572,005 | ) |  | $ | 5,041,515 |
Liabilities and stockholders’ equity |  |  |  |  |  |  |  |  |
Homebuilding: |  |  |  |  |  |  |  |  |
Accounts payable, accrued expenses and other liabilities | $ | 163,984 |  |  | $ | 371,909 |  |  | $ | 253,500 |  |  | $ | — |  |  | $ | 789,393 |
Notes payable | 2,289,532 |  |  | 9,283 |  |  | 26,030 |  |  | — |  |  | 2,324,845 |
| 2,453,516 |  |  | 381,192 |  |  | 279,530 |  |  | — |  |  | 3,114,238 |
Financial services | — |  |  | — |  |  | 966 |  |  | — |  |  | 966 |
Intercompany payables | 26,533 |  |  | 3,109,248 |  |  | 386,448 |  |  | (3,522,229 | ) |  | — |
Stockholders’ equity | 1,926,311 |  |  | — |  |  | 49,776 |  |  | (49,776 | ) |  | 1,926,311 |
Total liabilities and stockholders’ equity | $ | 4,406,360 |  |  | $ | 3,490,440 |  |  | $ | 716,720 |  |  | $ | (3,572,005 | ) |  | $ | 5,041,515 |
| November 30, 2016
| KB Home Corporate |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total
Assets |  |  |  |  |  |  |  |  |
Homebuilding: |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 463,100 |  |  | $ | 100,439 |  |  | $ | 28,547 |  |  | $ | — |  |  | $ | 592,086 |
Receivables | 4,807 |  |  | 135,915 |  |  | 90,943 |  |  | — |  |  | 231,665 |
Inventories | — |  |  | 3,048,132 |  |  | 355,096 |  |  | — |  |  | 3,403,228 |
Investments in unconsolidated joint ventures | — |  |  | 61,517 |  |  | 2,499 |  |  | — |  |  | 64,016 |
Deferred tax assets, net | 276,737 |  |  | 318,077 |  |  | 144,171 |  |  | — |  |  | 738,985 |
Other assets | 79,526 |  |  | 9,177 |  |  | 2,442 |  |  | — |  |  | 91,145 |
| 824,170 |  |  | 3,673,257 |  |  | 623,698 |  |  | — |  |  | 5,121,125 |
Financial services | — |  |  | — |  |  | 10,499 |  |  | — |  |  | 10,499 |
Intercompany receivables | 3,559,012 |  |  | — |  |  | 97,062 |  |  | (3,656,074 | ) |  | — |
Investments in subsidiaries | 35,965 |  |  | — |  |  | — |  |  | (35,965 | ) |  | — |
Total assets | $ | 4,419,147 |  |  | $ | 3,673,257 |  |  | $ | 731,259 |  |  | $ | (3,692,039 | ) |  | $ | 5,131,624 |
Liabilities and stockholders’ equity |  |  |  |  |  |  |  |  |
Homebuilding: |  |  |  |  |  |  |  |  |
Accounts payable, accrued expenses and other liabilities | $ | 131,530 |  |  | $ | 397,605 |  |  | $ | 237,192 |  |  | $ | — |  |  | $ | 766,327 |
Notes payable | 2,548,112 |  |  | 66,927 |  |  | 25,110 |  |  | — |  |  | 2,640,149 |
| 2,679,642 |  |  | 464,532 |  |  | 262,302 |  |  | — |  |  | 3,406,476 |
Financial services | — |  |  | — |  |  | 2,003 |  |  | — |  |  | 2,003 |
Intercompany payables | 16,360 |  |  | 3,208,725 |  |  | 430,989 |  |  | (3,656,074 | ) |  | — |
Stockholders’ equity | 1,723,145 |  |  | — |  |  | 35,965 |  |  | (35,965 | ) |  | 1,723,145 |
Total liabilities and stockholders’ equity | $ | 4,419,147 |  |  | $ | 3,673,257 |  |  | $ | 731,259 |  |  | $ | (3,692,039 | ) |  | $ | 5,131,624 |
Condensed Consolidating Statements of Cash Flows | Condensed Consolidating Statements of Cash Flows (in thousands)
| Year Ended November 30, 2017
| KB Home Corporate |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total
Net cash provided by operating activities | $ | 70,683 |  |  | $ | 374,524 |  |  | $ | 68,012 |  |  | $ | — |  |  | $ | 513,219 |
Cash flows from investing activities: |  |  |  |  |  |  |  |  |
Contributions to unconsolidated joint ventures | — |  |  | (13,563 | ) |  | (5,131 | ) |  | — |  |  | (18,694 | )
Return of investments in unconsolidated joint ventures | — |  |  | 4,119 |  |  | 6,916 |  |  | — |  |  | 11,035 |
Purchases of property and equipment, net | (7,215 | ) |  | (819 | ) |  | (51 | ) |  | — |  |  | (8,085 | )
Intercompany | 311,857 |  |  | — |  |  | — |  |  | (311,857 | ) |  | — |
Net cash provided by (used in) investing activities | 304,642 |  |  | (10,263 | ) |  | 1,734 |  |  | (311,857 | ) |  | (15,744 | )
Cash flows from financing activities: |  |  |  |  |  |  |  |  |
Repayment of senior notes | (270,326 | ) |  | — |  |  | — |  |  | — |  |  | (270,326 | )
Issuance costs for unsecured revolving credit facility | (1,711 | ) |  | — |  |  | — |  |  | — |  |  | (1,711 | )
Payments on mortgages and land contracts due to land sellers and other loans | — |  |  | (106,382 | ) |  | — |  |  | — |  |  | (106,382 | )
Issuance of common stock under employee stock plans | 23,162 |  |  | — |  |  | — |  |  | — |  |  | 23,162 |
Excess tax benefits from stock-based compensation | 958 |  |  | — |  |  | — |  |  | — |  |  | 958 |
Payments of cash dividends | (8,642 | ) |  | — |  |  | — |  |  | — |  |  | (8,642 | )
Stock repurchases | (6,673 | ) |  | — |  |  | — |  |  | — |  |  | (6,673 | )
Intercompany | — |  |  | (255,657 | ) |  | (56,200 | ) |  | 311,857 |  |  | — |
Net cash used in financing activities | (263,232 | ) |  | (362,039 | ) |  | (56,200 | ) |  | 311,857 |  |  | (369,614 | )
Net increase in cash and cash equivalents | 112,093 |  |  | 2,222 |  |  | 13,546 |  |  | — |  |  | 127,861 |
Cash and cash equivalents at beginning of year | 463,100 |  |  | 100,439 |  |  | 29,461 |  |  | — |  |  | 593,000 |
Cash and cash equivalents at end of year | $ | 575,193 |  |  | $ | 102,661 |  |  | $ | 43,007 |  |  | $ | — |  |  | $ | 720,861 |
| Year Ended November 30, 2016
| KB Home Corporate |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total
Net cash provided by (used in) operating activities | $ | (40,277 | ) |  | $ | 188,372 |  |  | $ | 40,560 |  |  | $ | — |  |  | $ | 188,655 |
Cash flows from investing activities: |  |  |  |  |  |  |  |  |
Contributions to unconsolidated joint ventures | — |  |  | (4,852 | ) |  | (750 | ) |  | — |  |  | (5,602 | )
Return of investments in unconsolidated joint ventures | — |  |  | 4,307 |  |  | — |  |  | — |  |  | 4,307 |
Purchases of property and equipment, net | (4,052 | ) |  | (555 | ) |  | (177 | ) |  | — |  |  | (4,784 | )
Intercompany | 144,651 |  |  | — |  |  | — |  |  | (144,651 | ) |  | — |
Net cash provided by (used in) investing activities | 140,599 |  |  | (1,100 | ) |  | (927 | ) |  | (144,651 | ) |  | (6,079 | )
Cash flows from financing activities: |  |  |  |  |  |  |  |  |
Change in restricted cash | 9,344 |  |  | — |  |  | — |  |  | — |  |  | 9,344 |
Payments on mortgages and land contracts due to land sellers and other loans | — |  |  | (67,845 | ) |  | — |  |  | — |  |  | (67,845 | )
Issuance of common stock under employee stock plans | 5,343 |  |  | — |  |  | — |  |  | — |  |  | 5,343 |
Excess tax benefits from stock-based compensation | 186 |  |  | — |  |  | — |  |  | — |  |  | 186 |
Payments of cash dividends | (8,586 | ) |  | — |  |  | — |  |  | — |  |  | (8,586 | )
Stock repurchases | (88,359 | ) |  | — |  |  | — |  |  | — |  |  | (88,359 | )
Intercompany | — |  |  | (115,729 | ) |  | (28,922 | ) |  | 144,651 |  |  | — |
Net cash used in financing activities | (82,072 | ) |  | (183,574 | ) |  | (28,922 | ) |  | 144,651 |  |  | (149,917 | )
Net increase in cash and cash equivalents | 18,250 |  |  | 3,698 |  |  | 10,711 |  |  | — |  |  | 32,659 |
Cash and cash equivalents at beginning of year | 444,850 |  |  | 96,741 |  |  | 18,750 |  |  | — |  |  | 560,341 |
Cash and cash equivalents at end of year | $ | 463,100 |  |  | $ | 100,439 |  |  | $ | 29,461 |  |  | $ | — |  |  | $ | 593,000 |
| Year Ended November 30, 2015
| KB Home Corporate |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Consolidating Adjustments |  | Total
Net cash provided by operating activities | $ | 44,422 |  |  | $ | 110,688 |  |  | $ | 26,075 |  |  | $ | — |  |  | $ | 181,185 |
Cash flows from investing activities: |  |  |  |  |  |  |  |  |
Contributions to unconsolidated joint ventures | — |  |  | (20,625 | ) |  | (1 | ) |  | — |  |  | (20,626 | )
Return of investments in unconsolidated joint ventures | — |  |  | 14,000 |  |  | — |  |  | — |  |  | 14,000 |
Purchases of property and equipment, net | (2,890 | ) |  | (1,271 | ) |  | (516 | ) |  | — |  |  | (4,677 | )
Intercompany | 45,470 |  |  | — |  |  | — |  |  | (45,470 | ) |  | — |
Net cash provided by (used in) investing activities | 42,580 |  |  | (7,896 | ) |  | (517 | ) |  | (45,470 | ) |  | (11,303 | )
Cash flows from financing activities: |  |  |  |  |  |  |  |  |
Change in restricted cash | 17,891 |  |  | — |  |  | — |  |  | — |  |  | 17,891 |
Proceeds from issuance of debt | 250,000 |  |  | — |  |  | — |  |  | — |  |  | 250,000 |
Payment of debt issuance costs | (4,561 | ) |  | — |  |  | — |  |  | — |  |  | (4,561 | )
Repayment of senior notes | (199,906 | ) |  | — |  |  | — |  |  | — |  |  | (199,906 | )
Payments on mortgages and land contracts due to land sellers and other loans | — |  |  | (22,877 | ) |  | — |  |  | — |  |  | (22,877 | )
Issuance of common stock under employee stock plans | 740 |  |  | — |  |  | — |  |  | — |  |  | 740 |
Excess tax benefits from stock-based compensation | 157 |  |  | — |  |  | — |  |  | — |  |  | 157 |
Payments of cash dividends | (9,186 | ) |  | — |  |  | — |  |  | — |  |  | (9,186 | )
Stock repurchases | (567 | ) |  | — |  |  | — |  |  | — |  |  | (567 | )
Intercompany | — |  |  | (19,586 | ) |  | (25,884 | ) |  | 45,470 |  |  | — |
Net cash provided by (used in) financing activities | 54,568 |  |  | (42,463 | ) |  | (25,884 | ) |  | 45,470 |  |  | 31,691 |
Net increase (decrease) in cash and cash equivalents | 141,570 |  |  | 60,329 |  |  | (326 | ) |  | — |  |  | 201,573 |
Cash and cash equivalents at beginning of year | 303,280 |  |  | 36,412 |  |  | 19,076 |  |  | — |  |  | 358,768 |
Cash and cash equivalents at end of year | $ | 444,850 |  |  | $ | 96,741 |  |  | $ | 18,750 |  |  | $ | — |  |  | $ | 560,341 |

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