Task: Program Execution
Input (English): 4, 21, ['6247', '259', '291', '7113', '7235', 'L', '1499', '8713', '1183', '9003', '9573', '6419', '2553', '1069', '1723', '799', 'J', 'N', '245', 'r', 'M', '5219', 'Z', '7329']
Output (English): Mr245NJ799172310692553641995739003118387131499L72357113