Task: Program Execution
Input (English): 4, 16, ['8675', 'W', '6159', 'R', '6477', 'O', '5239', '8381', '6315', 'B', 'A', '2931', '7437', 'e', 'x', '6725']
Output (English): R6477O523983816315BA29317437ex6725