Task: Program Execution
Input (English): 8409 Z K W y 4851 693 3737 Z 3587 4417 V h m e e R Y b r 9509 S 5597 8003 I 3157 8881 4323 6049 1149 1357 X l W i K 7203
Output (English): 1, 6, 7, 8, 10, 11, 21, 23, 24, 26, 27, 28, 29, 30, 31, 37