Google Code-in

Add 500 words to any existing language pair in Apertium's code repository where you know both languages. Check The OPUS bilingual corpus repository for sentence-aligned corpora such as Tatoeba. Read more...

For this task, you only need to add words to the bilingual dictionary, and not the respective monolingual dictionaries, but you need to add 500 words. We recommend doing the 50-word beginner task and the 250-word task first, but it's not required.

In any case, make sure you take this Wiki page into account: http://wiki.apertium.org/wiki/Building_dictionaries when deciding what to add.

For further information and guidance on this task, you are encouraged to come to our IRC channel.