Task: Program Execution
Input (English): 6639 7255 957 s 6501 6469 h y O 2209 8885 6811 k 473 9585 h 6687 Z Y 5075 g M N l 9519 853 a 3117 2085 8795 t 1071 T p 4593 i
Output (English): 4, 7, 8, 9, 13, 16, 18, 19, 21, 22, 23, 24, 27, 31, 33, 34, 36