Task: Program Execution
Input (English): 18, 23, ['5919', 'l', 'm', 'N', 'P', '4719', 'W', 'L', '259', '3329', '9737', '4473', 'p', '6757', '7769', 'N', '2515', 'l', '4577', 'b', '4507', '1873', '1455', 'O']
Output (English): 1455, 1873, 4507, b, 4577, l