G. [eu], [iu] became [io] or [iu]; [{eu|iu}] > [io|iu]

⚠️G. [eu], [iu] became [io] or [iu]; [{eu|iu}] > [io|iu]
See OS. [eu] became [iu] for discussion.

Phonetic Rule Elements

[eu] > [io]
[iu] > [io]
[eu] > [iu] ✧ PE15/13 (eu > iu; unacc. io/yo)

Phonetic Rule Examples

nreu > nrio eu > io ᴱ✶n’reu̯ > G. †drio ✧ GL/30
giul > giol iu > io ᴱ√giu̯i > G. giol ✧ GL/39
giuθ > gioθ iu > io ᴱ√giu̯i > G. gioth ✧ GL/39
giuθra- > gioθra- iu > io ᴱ√giu̯i > G. giothra- ✧ GL/39
gʷiuθ > gʷioθ iu > io ᴱ√gu̯iu̯ > G. gwioth ✧ GL/42