Jola-Fonyi language

Jola (; Jola: "Joola"), also called Jola-Fonyi () and Kujamataak, is a language spoken by half a million people in the Casamance region of Senegal, and neighboring countries. Jola-Fonyi is one of several closely related Jola languages spoken in the area.
Phonology.
Vowels.
Vowel length is also phonemic.
Writing System.
In Senegal.
In Senegal, the decree 2005-981 created the official orthography of Jola.
Long vowels are indicated by doubling the letter: <aa ee ii oo uu>. The acute accent over a vowel <á é í ó ú> indicates that the advanced and retracted tongue root for that vowel and the other vowels of the words by vowel harmony.