Task: Program Execution
Input (English): d 8693 7275 c I s V M 2773 y 3097 5523 3023 C 4191 F g 9989 9071 2779 Z 1971 2169 B 5933 4139 6099 i C v
Output (English): 2, 3, 9, 11, 12, 13, 15, 18, 19, 20, 22, 23, 25, 26, 27