Task: Program Execution
Input (English): 1, 9, ['2101', '8701', '1453', 's', '659', '6073', '8483', '5915', '8227', 'B', '3819', '5173', 'd', 'z', '7309', '3579', 'L', 'T', 'l', '9515', '9287', 'z', '9035', 'S', 'I', '3409']
Output (English): 2101, B, l