Task: Program Execution
Input (English): 19, 21, ['S', '8831', '3133', 'h', '8637', 'T', 'l', 'Z', 'v', 'g', '8583', '3859', '6779', '1477', 'j', 'e', '9419', 's', 'a', 'P', '1399', '6221', 'C', '4479', 'F']
Output (English): 1399Pa