Task: Program Execution
Input (English): 861 Z i u 4239 u 7933 h x 3003 1525 v i W 25 6231 2447 3895 2481 1549 x U 3839 2545 e 2755 b x 5281
Output (English): 2, 3, 4, 6, 8, 9, 12, 13, 14, 21, 22, 25, 27, 28