Task: Program Execution
Input (English): k 7833 4873 8769 U 4769 m 2497 369 3411 2315 7669 x 6841 5903 O T Y 9699 n n o p 9817 2891 E M b t 5775 75 5303 d 4547 6479 6827 6297 l
Output (English): 2, 3, 4, 6, 8, 9, 10, 11, 12, 14, 15, 19, 24, 25, 30, 31, 32, 34, 35, 36, 37