Task: Program Execution
Input (English): 3, 25, ['U', 'D', 'h', '8485', 'U', 'N', '4293', '2531', '3467', '1939', '523', '5381', 'W', '6005', 'c', 'B', 'T', 'R', '2981', 'a', '9331', 'b', 'x', 'M', '129', 'W', '2431', 'J']
Output (English): 921Mxb1339a1892RTBc5006W18353259391764313523924NU5848h