Write a regex that works in at least 2 regex flavors (or versions), and match a different string in each flavor (or version) it is running in.
The strings to be matched in this challenge are the first words of the Ubuntu code names, which are listed below. Your regex has to match from the top of the list. That is, if your regex works in 3 flavors, it has to match
Breezy, and not others.
Warty Hoary Breezy Dapper Edgy Feisty Gutsy Hardy Intrepid Jaunty Karmic Lucid Maverick Natty Oneiric Precise Quantal Raring Saucy Trusty Utopic Vivid Wily Xenial Yakkety Zesty 17.10 18.04 18.10 19.04 19.10 ...
If your regex works in more than 26 flavors, you can match the Ubuntu version numbers instead. Starting from 17.10, for each new flavor, change the second number to 10 if it was 04, and increment the first number and change the second to 04 otherwise.
In each flavor, your regex should match only the supposed string and nothing else (not limited to the code names). Trailing newlines doesn't matter. That means your regex could either match only the string without the trailing newline, match only the string with the trailing newline, or match both. And it doesn't have to be consistent in different flavors. You can assume the input is in printable ASCII (except for the trailing newline, if there is one).
Your score is (the length of your code+10)/((number of flavors)^2). Lowest score wins.