Task: Program Execution
Input (English): 6655 9201 8189 r 9657 5693 B x 2921 747 3231 o 293 8615 b b t 6197 7171 5955 9727 1509 I t z n 3029 C 4353 3987 j n G Y X U 9831
Output (English): 1, 2, 3, 5, 6, 9, 10, 11, 13, 14, 18, 19, 20, 21, 22, 27, 29, 30, 37