Task: Program Execution
Input (English): f o 7663 8405 Y C H 4351 C U n V E Q 8883 S 4599 T T 2355 9185 C 9167 471 x L d M
Output (English): 1, 2, 5, 6, 7, 9, 10, 11, 12, 13, 14, 16, 18, 19, 22, 25, 26, 27, 28