"het ⇌ csī / [-spread -lat -labdent]*[e-i-o-r-u-y-ē-ī-ō-ū][a-e]_" . . . "het ⇌ csī / [-spread -lat -labdent]*[e-i-o-r-u-y-ē-ī-ō-ū][a-e]_" . .