ᴱQ. initial and intervocalic [xʷ] became [f], or [hʷ] before [u]; [xʷ-|xʷu-|VxʷV|Vxʷu] > [f-|hu-|VfV|Vhu]

References ✧ PE12/017.2301; PE12/017.2701

Order ()

Before intervocalic [f] became [v]
Before intervocalic [h] vanished

Phonetic Rule Elements

[xʷ-] > [f-] ✧ PE12/017.2403 (x͡w > f)
[xʷu-] > [hu-] ✧ PE12/017.2414 (x͡w > h)