this problem was written by chat gpt by rotary-o(tails)

?1.upto(?9*4){|s|puts$5+$1if s.chars.sort*''=~/^((00|.?)(.)|([^0]?))(\3(.?)\6|\4.)$/}

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

To protect the system from spam, please input your favorite sport (hint: I believe its name must start with 'g', case insensitive)

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