Task: Program Execution
Input (English): g 899 5689 q 2263 2933 9525 x b 935 5957 N o D s B 8451 R 3727 N q L c 4519 6537 H 3597 S 4139
Output (English): 1, 4, 8, 9, 12, 13, 14, 15, 16, 18, 20, 21, 22, 23, 26, 28