Ilk. final [j], [w] became [i], [u]; [-C{jw}] > [-C{iu}]
Where [j] (“y”) or [w] became final after short final vowels vanished, these semi-vowels became vowels, first becoming [i] and [u], after which these final [i], [u] usually became [e], [o]. The clearest examples of this development are ᴹ✶winyā > gwini > Ilk. gwine (Ety/WIN) and ᴹ✶wilwā > gwelu > Ilk. gwelo (Ety/WIL).
Phonetic Rule Elements
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Phonetic Rule Examples
| gwenj > gweni | -j > -i | ᴹ√GWEN > Ilk. gwene | ✧ Ety/GWEN |
| gwinj > gwini | -j > -i | ᴹ✶winyā > gwini > Ilk. gwine | ✧ Ety/WIN |
| linj > lini | -j > -i | ᴹ√LIN¹ > Ilk. line | ✧ Ety/LIN¹ |
| adw > adu | -w > -u | ᴹ√AT(AT) > adu > Ilk. ado | ✧ Ety/AT(AT) |
| ganw > ganu | -w > -u | ᴹ√ƷAN > Dor. ganu | ✧ Ety/ƷAN |
| gelw > gelu | -w > -u | ᴹ√ƷEL > Dor. gelu | ✧ Ety/ƷEL |
| gwaw > gwau | -w > -u | ᴹ√WAWA > Ilk. gwau | ✧ Ety/WĀ |
| gwelw > gwelu | -w > -u | ᴹ✶wilwā > gwelu > Ilk. gwelo | ✧ Ety/WIL |
| heðw > heðu | -w > -u | ᴹ✶khithwa > Dor. heðu | ✧ Ety/KHIS |
| ŋgolw > ŋgolu | -w > -u | ᴹ√ÑGOL > Dor. (n)golo | ✧ Ety/ÑGOL |