Where does “*rɯəᴬ⁴” come from?

*rɯəᴬ⁴ (Proto-Southwestern Tai) comes from Proto-Tai *C̬.rwɯəᴬ.

Ancestry of “*rɯəᴬ⁴”, step by step

Step	Language	Word	Meaning
1	Proto-Tai	*C̬.rwɯəᴬ	—