Task: Program Execution
Input (English): 3771 8219 D u e 5215 R c g j 4979 D y R 6631 7221 5203 1149 4509 C W 1335 1885 e 119 l k 7551 j i 889 y 925 1075 8109 5415 l
Output (English): 1, 2, 6, 11, 15, 16, 17, 18, 19, 22, 23, 25, 28, 31, 33, 34, 35, 36