Task: Program Execution
Input (English): 4891 5141 3817 4765 x 8377 b 1239 3799 o 2783 w 2531 E 4205 E v 3629 6491 k R W 3001 u a 369 4321 5555 f k 2277 l 8775 j
Output (English): 1, 2, 3, 4, 6, 8, 9, 11, 13, 15, 18, 19, 23, 26, 27, 28, 31, 33