Task: Program Execution
Input (English): 6667 B Y p h 5335 2067 y B 2229 9541 8419 J 7833 2047 J D 2939 4395 419 b x G p 2651 X 91
Output (English): 1, 6, 7, 10, 11, 12, 14, 15, 18, 19, 20, 25, 27