Task: Program Execution
Input (English): r a J 2793 C 9429 C 1047 6619 o N 347 7801 p 6951 X Z R 3421 C 2465 D 2853 4211 s L 11 6001 x
Output (English): 4, 6, 8, 9, 12, 13, 15, 19, 21, 23, 24, 27, 28