Task: Program Execution
Input (English): H 8391 137 4305 B A 4805 c n Y 4153 H 9699 B 999 N 2225 A 5469 2217 1007 E 3837 4469 n r 9595
Output (English): 2, 3, 4, 7, 11, 13, 15, 17, 19, 20, 21, 23, 24, 27