Task: Program Execution
Input (English): 4, 12, ['9903', '2795', '3801', '673', '7833', '7793', '3075', '9213', 'G', 'y', 'X', '213', '3553', '8123', '2233', '2691', 'y']
Output (English): 6737833779330759213GyX213