Task: Program Execution
Input (English): 4, 8, ['M', '5123', 'H', '3423', 'X', 'b', 'k', '3427', '4007', 'W', '1163', '5811', 'f', 'C', '8611', '5549', 'x', '4109', '8431']
Output (English): 3427kbX3423