Task: Program Execution
Input (English): 8, 10, ['2803', '8395', '7085', 'N', '981', 'g', '2685', 'C', 'O', '3943', 'D', '5437', 'C', 'X', 'l', 'r', '2451', 'y']
Output (English): C, O, 3943