Task: Program Execution
Input (English): K 999 139 591 E s 6689 v 4873 h 905 5319 6219 6379 W C 9913 6691 2449 1267 657 F c 5763 r 8919 7219 2171 3253 l 2931 C q M Q e
Output (English): 2, 3, 4, 7, 9, 11, 12, 13, 14, 17, 18, 19, 20, 21, 24, 26, 27, 28, 29, 31