Task: Program Execution
Input (English): 907 a U t I f d z 1205 939 7317 9423 6063 5891 J D v 8915 L 4087 J R 5467 x 7367 2299 8297 9613
Output (English): 2, 3, 4, 5, 6, 7, 8, 15, 16, 17, 19, 21, 22, 24