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Cash and cash equivalents (Tables)
 12 Months Ended
Dec. 31, 2021
Schedule of cash and cash equivalents

 Schedule of cash and cash equivalents

     12.31.21     12.31.20 
Cash and banks                  1,518                  2,472
Time deposits                     305                         -
Mutual funds                   1,349                  4,110
Total cash and cash equivalents                  3,172                  6,582