Task: Program Execution
Input (English): X 6237 6517 q 5975 R V 4941 5385 9385 s 7935 2531 9391 E 959 4661 I 7521 o 2245 I J 169 131 7793 L 883 W t i 9251 S c
Output (English): 1, 4, 6, 7, 11, 15, 18, 20, 22, 23, 27, 29, 30, 31, 33, 34