Mongolian script multigraphs
This article describes two- and three-letter combinations (so-called digraphs and trigraphs) used for the Mongolian language when written in the Mongolian script. == Vowel and consonant combinations == The intervocalic letters ɣ/g, and y has in some combinations come to help form long vowels, namely: Long a with: aɣa, iɣa, iya.
Source: Wikipedia — Mongolian script multigraphs (CC BY-SA 4.0)