Task: Program Execution
Input (English): 6657 3879 8919 A t N 4837 8183 t A 5169 6089 C 6597 6199 D 9999 P y 869 B T p 9099 v 9627 8835 1601 1621
Output (English): 4, 5, 6, 9, 10, 13, 16, 18, 19, 21, 22, 23, 25