Language of the Four/Phonology

Vowels
The language of the four has a rather easy (single) vowel system of only 5 different vowels: All of these vowels can be short or long.

Diphthongs
The diphthong system of the LotF is a bit more complicated than the single vowel system - especially because Fourish diphthongs contain more than the 5 vowels listed above. However, there is a very important rule for diphthongs: The first vowel has to be one of the 5 possible single vowels.