Task: Program Execution
Input (English): 2, 21, ['697', 'm', 'x', '4189', 'v', '6799', 'k', 'D', '5757', '553', 'd', 'X', '9573', '8683', 'm', '1319', '6711', 'M', 'z', 'Z', '7469', 'W', 'F']
Output (English): mx4189v6799kD5757553dX95738683m13196711MzZ7469