Task: Program Execution
Input (English): Y 1663 O c f i 1773 4781 7719 3801 u 7363 7487 A 7233 m 5833 2759 8421 9471 6323 735 u 3431 Y 2561 9171 7735 5187 Z 547
Output (English): 2, 7, 8, 9, 10, 12, 13, 15, 17, 18, 19, 20, 21, 22, 24, 26, 27, 28, 29, 31