According to some classifications, the Khalkha dialect includes Inner Mongolian varieties such as Shiliin gol, Ulaanchab and Sönid.
Both varieties share affricate depalatalization, namely, /tʃ/ > /ts/ and /tʃʰ/ > /tsʰ/ except before *i, while Southern Khalkha patterns with Chakhar and Ordos Mongolian in that it exhibits a dissimilating deaspiration; e.g. *tʰatʰa > /tatʰ/.
[11] Especially in the speech of younger speakers, /p/ (or /w/) > [ɸ] may take place, as in Written Mongolian qabtasu > Sünid [ɢaptʰǎs] ~ [ɢaɸtʰǎs] 'cover (of a book)'.
[12] One of the classifications of Khalkha dialect in Mongolia divides it into 3 subdialects: Central, Western and Eastern.
The orthography of the Mongolian Cyrillic alphabet is essentially based on the Central Khalkha dialect.