Task: Program Execution
Input (English): 7137 z 4793 1751 W d 6435 M 7849 4217 3867 A 8577 T r 317 6053 3257 d r y t h c G
Output (English): 1, 3, 4, 7, 9, 10, 11, 13, 16, 17, 18