Task: Program Execution
Input (English): 9, 15, ['2191', '51', '8047', 'N', 'i', '8409', 's', 'B', 'a', 'f', '4729', 'q', '2409', '1301', 'c', '6987', '993', '8637', 'f']
Output (English): af4729q24091301c