Task: Program Execution
Input (English): 7229 2671 k 5639 2823 3915 d Y 5951 Q 3421 U 2607 5369 4473 o G F 3797 X 4145 S Z Z 531 7359 t 6791
Output (English): 1, 2, 4, 5, 6, 9, 11, 13, 14, 15, 19, 21, 25, 26, 28