"m_et ⇌ _uī / [-spread -lat -labdent]*c[o-u]_[a-b-d-e-g-i-o-r-u-y-z-ā-ē-ī-ō-ū]+_" . . . "m_et ⇌ _uī / [-spread -lat -labdent]*c[o-u]_[a-b-d-e-g-i-o-r-u-y-z-ā-ē-ī-ō-ū]+_" . .