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- Python
- Ruby
- Clojure
- JavaScript
- Haskell
- CoffeeScript
- Java
- C++
- C#
- Dart
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- C
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- Shell
- Swift
- Objective-C (Beta)
- Go
- Elixir
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- Groovy
- Julia (Beta)
- NASM
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- Racket
- Crystal
- R (Beta)
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Start training on this collection. Each time you skip or complete a kata you will be taken to the next kata in the series. Once you cycle through the items in the collection you will revert back to your normal training routine.