For a long time, researchers considered “lục bát” forms to be a pure Vietnamese one. Besides, Cham people had a poetic form which look very similar it called “ariya”. Since early 17th century, Cham authors used this form of poetry to write their poems.
Tapa dôm rituh thun talah, ra-mưgru Biêtnām xanưng laic thek lục bát yōm dôm Yôn min hu. Karei di nan, bôl Cam jāng hu thek mưdrơh yau nan, pa-angan ariya. Mưng di akok uthumān XVII, ra-panưh Cam angui “ariya” cwak akayet jāng yau dôm ariya pakan pajơ.