As indicated in the Comparative Tables, medial [ɣ] (= “ʒ”) vanished (PE19/23), as opposed to initial [ɣ] which became [g]. This vanishing was also true of [ɣ] that developed from medial [g] when voiced stops spirantalized after vowels, and was thus probably later than this change. The clearest example of this development is ᴹ✶tūgu > tūgh> Ilk. tû (Ety/TUG).

It is likely that the medial [ɣ] developed into a vowel in some cases, as part of the process whereby [g] became [i] between an [l] and a vowel or [g] vocalized before [m], [n], but there is not enough evidence to determine the exact process.