Task: Program Execution
Input (English): 1, 15, ['d', '8081', 'D', 'W', 'a', 'c', '2035', 't', '1497', '9509', 'M', '5377', 'Z', 'W', 'M', 'R', 'O', 'M', '4777', 'c', 'a']
Output (English): MWZ5377M95091497t2035caWD8081d