Task: Program Execution
Input (English): 9, 13, ['3313', 'L', 's', 'u', '4553', 'i', 'm', '8749', '2607', '8699', '7021', '1677', 'x', 'm', '1313', 'u', '9203']
Output (English): x, 1677, 7021, 8699, 2607