Middle Gujarati (AD 1500–1800), split off from Rajasthani, and developed the phonemes ɛ and ɔ, the auxiliary stem ch-, and the possessive marker -n-. Major phonological changes characteristic of the transition between Old and Middle Gujarati are: * i, u develop to ə in open syllables * diphthongs əi, əu change to ɛ and ɔ in initial syllables and to e and o elsewhere * əũ develops to ɔ̃ in initial syllables and to ű in final syllables