"de_e ⇌ su_um / X*[a-e-i-m-n-o-r-u-y-ā-ē-ī-ō-ū]_r_" . . . "de_e ⇌ su_um / X*[a-e-i-m-n-o-r-u-y-ā-ē-ī-ō-ū]_r_" . .