"he_e ⇌ ctu_um / [-spread -lat -labdent]*[e-i-o-r-u-y-ē-ī-ō-ū][a-e]_r_" . . . "he_e ⇌ ctu_um / [-spread -lat -labdent]*[e-i-o-r-u-y-ē-ī-ō-ū][a-e]_r_" . .