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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Piggybacking on this,
==2?'':xcould also be changed to^2?x:''to drop another character. Thejoincould also be dropped in favor of(...+'')to drop a few more characters.you troll. you win
This solution is hilarious, I love it.