Task: Program Execution
Input (English): u 4713 8195 i a 4099 6403 z 6685 R 2401 o 6383 j x 9483 2295 7731 b a 1537 s 1359 6645 3477 47 O H
Output (English): 2, 3, 6, 7, 9, 11, 13, 16, 17, 18, 21, 23, 24, 25, 26