The Khorchin dialect (Mongolian ᠬᠣᠷᠴᠢᠨ Qorčin, Chinese 科尔沁 Kē'ěrqìn) is a variety of Mongolian spoken in the east of Inner Mongolia, namely in Hinggan League, in the north, north-east and east of Hinggan and in all but the south of the Tongliao region.
[4] Then, *u (<*ʊ<*u) has regressively assimilated to /ɑ/ before *p, e.g. *putaha (Written Mongolian budaγ-a) > pata ‘rice’.
On the other hand, *ö is absent, e.g. Proto-Mongolic *ɵŋke > Kalmyk /ɵŋ/, Khalkha /oŋk/ 'colour',[9] but Khorchin /uŋ/, thus merging with /u/.
On the other hand, /u/ still determines a word as front-vocalic when appearing in the first syllable, which doesn't hold for /ɛ/ and /i/.
A similar function is fulfilled by the suffix /-ɑri/ that is, however, restricted to environments in the past stratum.