Task: Program Execution
Input (English): 3771 d 6003 6775 6921 487 2391 i R y 1531 5917 9941 l U 8645 7473 a E 51 4199 p g h j 3379 4287 5245 N U b e
Output (English): 1, 3, 4, 5, 6, 7, 11, 12, 13, 16, 17, 20, 21, 26, 27, 28