Task: Program Execution
Input (English): 12, 21, ['A', 'M', '7909', 'r', 'u', '6633', '1343', 'E', '1173', 'y', 'h', 'f', 'c', '8463', '9711', '9561', '5061', 'd', '6477', 'n', '8863']
Output (English): 8863n6477d5061956197118463cf