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- JavaScript
- PHP
- Haskell
- Python
- Ruby
- Crystal
- CoffeeScript
- C#
- C++
- C
- NASM
- COBOL (Beta)
- Nim (Beta)
- Factor (Beta)
- D (Beta)
- Go
- Rust
- Scala
- Java
- Lua
- Prolog (Beta)
- Julia (Beta)
- Groovy
- TypeScript
- Dart
- Fortran (Beta)
- Clojure
- Swift
- F#
- Elixir
- R (Beta)
- CFML (Beta)
- Shell
- OCaml (Beta)
- Kotlin
- PowerShell (Beta)
- Reason (Beta)
- Racket
- Haxe (Beta)
- Pascal (Beta)
- Perl (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.