Task: Program Execution
Input (English): d 1523 J 7303 6677 n 6223 q W 6157 6431 8315 c a E 1391 133 W 2559 6421 Y O E 1223 T 8935 V a T l x x T C
Output (English): 2, 4, 5, 7, 10, 11, 12, 16, 17, 19, 20, 24, 26