Task: Program Execution
Input (English): 6491 8565 1577 5335 5205 2363 y W 3607 5573 3857 D S w r 9867 p N 8419 2915 6949 S 8591 H 6371 6851 7233 o 3211 F U a T G
Output (English): 1, 2, 3, 4, 5, 6, 9, 10, 11, 16, 19, 20, 21, 23, 25, 26, 27, 29