Task: Program Execution
Input (English): 8, ['R', '2437', 'r', 'W', '2757', 'r', '1951', 'd', 'k', '6969', 'z', '565', 'W', 'g', 'q', 'T', 'B', 'k', '2149', 'i', '4003', '1453', '2491', 'J', 'k', '9675', '555', '8739']
Output (English): R, k, B, k