ᴹ✶final [ā] became [ē] after [tw], [tm]; [-t{mw}ā] > [-t{mw}ē]

ᴹ✶final [ā] became [ē] after [tw], [tm]; [-t{mw}ā] > [-t{mw}ē]

GS/§4.16 @@@ compare: nidwa² @@@

Phonetic Rule Elements

[-tmā] > [-tmē]
[-twā] > [-twē]

Phonetic Rule Examples

jatmā > jatmē -tmā > -tmē ᴹ✶yatmā > Dor. aðum ✧ EtyAC/YAT.008
jatmā > jatmē -tmā > -tmē ᴹ✶yatmā > N. ianw ✧ Ety/YAT.017
jatmā > jatmē -tmā > -tmē ᴹ✶yatmā > ON. yadme ✧ Ety/ƷEL.049-2
katwā > katwē -twā > -twē ᴹ✶katwā > ON. katwe ✧ Ety/KAT.033