Task: Program Execution
Input (English): 4819 6411 6843 z q 1317 f d B 4681 y 4665 X w R 4265 4525 D W t t p r 3641 t
Output (English): 4, 5, 7, 8, 9, 11, 13, 14, 15, 18, 19, 20, 21, 22, 23, 25