Q. [ŋ] before [m], [n] vanished while lengthening preceding vowel; [Vŋ{mn}] > [V̄ø{mn}]

in Middle Quenyta ñm > ñgw

References ✧ PE19/082.0700; PE19/096.3800; PE19/097.0105; PE19/098.2612

Related

Phonetic Rule Elements

[Vŋ{mn}] > [V̄ø{mn}] ✧ PE19/096.3811 (iŋ, uŋ > ī̜, ų̄; before n, m); PE19/097.0112 (eŋ, aŋ, oŋ + m > ę̄, ą̄, ǭ); PE19/098.2801 (iñn, uñn > iʒn, uʒn‽ > ín, ún)