Where does “*özek” come from?

*özek (Proto-Turkic) comes from Common Turkic ȫz, from Proto-Turkic ȫŕ — inside.

Ancestry of “*özek”, step by step

StepLanguageWordMeaning
1Common Turkicȫz—
2Proto-Turkicȫŕinside
Every word from Proto-Turkic ȫŕ →Every word from Common Turkic ȫz →