"ge_e ⇌ ctu_um / [-spread]*[a-e-i-m-n-o-r-u-y-ā-ē-ī-ō-ū]_r_" . . . "ge_e ⇌ ctu_um / [-spread]*[a-e-i-m-n-o-r-u-y-ā-ē-ī-ō-ū]_r_" . .