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CONDENSED BALANCE SHEETS (Parenthetical) - $ / shares | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Preferred stock, par value (in dollars per share) | $ 1 | $ 1
Common stock, par value (in dollars per share) | $ 0 | $ 0
Preferred, Class B |  |
Preferred stock, authorized shares | 5,000,000 | 5,000,000

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