Task: Program Execution
Input (English): 4, ['M', '8941', '1813', 'b', '5603', 'D', '3409', 'O', '2771', '9315', '7347', '5389', 'e', 'D', 'C', 'v', '3773', '2325', '3117']
Output (English): M, 5603, 2771, e, 3773