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- JavaScript
- Ruby
- Python
- Haskell
- PHP
- C++
- Java
- C#
- Elixir
- VB (Beta)
- COBOL (Beta)
- Go
- Clojure
- C
- Kotlin
- Rust
- Scala
- CoffeeScript
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- Crystal
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- Factor (Beta)
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- NASM
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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.