Task: Program Execution
Input (English): 6613 C 8843 3473 9407 c C e 1501 J 4833 y O h 8047 8207 3451 c A 8201 8181 l a 8427 B Q 9355 7949 8949 s
Output (English): 1, 3, 4, 5, 9, 11, 15, 16, 17, 20, 21, 24, 27, 28, 29