Task: Program Execution
Input (English): 15, 21, ['v', 'Y', 'Z', '5461', 'd', 'A', '6109', '4069', '4101', 'd', '7085', '4033', '9265', 'p', '5123', '2197', 'O', '1605', 'N', '9783', '7949', '4395', '2605', 'v', '7251']
Output (English): 94973879N5061O79123215