Task: Program Execution
Input (English): C, 6737, 853, I, 5331, 3835, 8889, 4105, 1661, 4699, 1993, R, 4519, 6481, 6697, F, 6235, D, 7753, 4463, J, u
Output (English): 2, 3, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 17, 19, 20