Task: Program Execution
Input (English): 4, 8, ['B', '6581', 'q', 'R', '3751', '1779', '4361', 'W', '5657', 'q', '9709', 'v', '623', 'M', '6233', '4503', 'n', '2141', 'n', 'R', 'q', '3967', '7937', 'b', 'v', '5207']
Output (English): R, 3751, 1779, 4361, W