Task: Program Execution
Input (English): 21, 24, ['7633', 'X', '5895', '3931', 't', '1911', '4557', '5015', 'j', 'v', '3409', 'c', 'T', 'O', 'a', '8735', 'm', '1881', '1017', 'F', '1935', 'w', '3491', 's', 'Y', '6273', '6803', 'b', '5639', 'v']
Output (English): s1943w5391