"ēb ⇌ u / [-spread -labdent -low]*[a-b-d-e-l-o-p-r-s-t-z-ā-ē-ō][e-i-o-r-u-y-ē-ī-ō-ū][b-c-d-g-k-p-q-t]_it" . . . "ēb ⇌ u / [-spread -labdent -low]*[a-b-d-e-l-o-p-r-s-t-z-ā-ē-ō][e-i-o-r-u-y-ē-ī-ō-ū][b-c-d-g-k-p-q-t]_it" . .