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- Python
- JavaScript
- Ruby
- Java
- Haskell
- CoffeeScript
- Elixir
- PHP
- Go
- C#
- Dart
- Lua
- C++
- OCaml (Beta)
- Rust
- TypeScript
- COBOL (Beta)
- C
- Clojure
- Crystal
- F#
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- R (Beta)
- Shell
- Kotlin
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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.