Task: Program Execution
Input (English): L U 3473 1251 2699 M s 9757 l 5045 7833 3 X 8897 k 777 v w 4253 e 7497 2373 599 1399 1399 9859 4147 h x 3477 r 4613 E 9903
Output (English): 1, 2, 6, 7, 9, 13, 15, 17, 18, 20, 28, 29, 31, 33