Task: Program Execution
Input (English): 4, 20, ['3987', 'J', 'o', '439', 'C', 'F', 'P', '1491', 'R', 'Y', 'o', 'n', 'P', '2023', '9823', 'J', 'm', '7619', '4267', '2547', 'y', '1765', 'F', '9769', 'z']
Output (English): 745276249167mJ32893202PnoYR1941PFC934