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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.
oh, thanks. Error in this case should look somewhat shorter and more clear, I've screwed up smth when refactoring, fixed.
See it, but can't solve the ordering issue :(
No, group K-12 has 9 students.
Thanks for help, forgot about it)
Now, it looks like the database does not have correct cases? The K-12 group has 8 people, not 9?
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This comment is hidden because it contains spoiler information about the solution