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- Python
- Ruby
- JavaScript
- Crystal
- Java
- C#
- Factor (Beta)
- CoffeeScript
- Scala
- TypeScript
- COBOL (Beta)
- Haskell
- C++
- Rust
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- OCaml (Beta)
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.