Task: Program Execution
Input (English): 8, 13, ['7155', '4103', '6999', '5377', 'X', '5529', '8607', 'l', 'X', '9331', 'n', 'S', 'W', 'h', '3421', '1717', '5367', '445']
Output (English): l, X, 9331, n, S, W