Task: Program Execution
Input (English): r s 3561 4123 6109 7761 A y 2863 u r S 1871 R L 8183 3273 O Q 9745 L Q U 7541 c 5877 s f W R t 5345 a h 741 1201 8233
Output (English): 3, 4, 5, 6, 9, 13, 16, 17, 20, 24, 26, 32, 35, 36, 37