Task: Program Execution
Input (English): 621 1671 E 1869 3261 r 211 A 9873 5931 F 3977 3423 2347 2499 3869 I 3449 B 5195 o 4835 s Z s 9505 i e 555 s n I g J L K
Output (English): 3, 6, 8, 11, 17, 19, 21, 23, 24, 25, 27, 28, 30, 31, 32, 33, 34, 35, 36