Task: Program Execution
Input (English): 4, 4, ['U', 'S', '9557', 'l', '6019', 'E', '7435', '2819', '2355', 'x', '8511', 'O', '2531', '7831', 'k', 'g', 'h', '3537', '9657', 'Z', '8143']
Output (English): l, 2819, O, g, Z