Task: Program Execution
Input (English): 15, 20, ['N', '8965', 'D', 'Q', 'G', 'N', '9201', '4445', '6239', 'L', '5227', '8949', '3451', '7375', 'x', '5187', '1129', '3213', '5411', 'F', 'Q', '1969', '6051', 'M', '3545', '2035']
Output (English): x, 5187, 1129, 3213, 5411, F