Task: Program Execution
Input (English): 15, 21, ['4815', '7243', 'V', 'd', '5663', 'O', '3827', 'm', 'D', 'n', '9979', 'c', '9461', '731', 'm', 'S', 'O', '6775', '1519', 'C', '2913', '7567', '2619', 'u', '2889', '7527', '6733', '3331', '9571', '7755']
Output (English): mSO67751519C2913