Task: Program Execution
Input (English): 11, 13, ['1215', '5867', 'B', 'u', '7223', '2339', 'f', '5665', 'b', 'E', '9509', 'P', '1237', 't', '7143', 'h', 'L', '3297', '3941']
Output (English): 1237, P, 9509