Task: Program Execution
Input (English): 7463 a J i j 969 r 7535 8753 3703 3013 B 9275 v r p 5715 x R 3213 9657 7553 j G F 7827 B S 3843 5933 I P I 9419 W K z
Output (English): 2, 3, 4, 5, 7, 12, 14, 15, 16, 18, 19, 23, 24, 25, 27, 28, 31, 32, 33, 35, 36, 37