Task: Program Execution
Input (English): 1, 11, ['267', 'Y', 'z', '8623', 'X', '6651', '4607', '1665', '1797', '2469', 'N', '3993', '5225', 'y', 'L', 's', 'z', 'U', 'T', '5943', '1331', 'Z', '9601', 'M', 'r']
Output (English): 267, 3993, 9601