Talnuwathiki (Luna: Earth II)

Talnuwathiki (English: Language of Luna) is the official language of all Lunar countries. It was originally created with the merge of two tribal languages and spread to different lands, eventually making it the largest-speaking language on Luna.

Vowels
Unlike and most languages on Earth, Talnuwathiki is strictly a phonetic language. Except for a placeholder letter (widely considered "H"), it lets lunans spell, write and pronounce words with ease.