"dēbit ⇌ surum / [-spread -labdent]*[a-e-i-o-r-u-y-ā-ē-ī-ō-ū][a-e-i-m-n-o-r-u-y-ā-ē-ī-ō-ū]_" . . . "dēbit ⇌ surum / [-spread -labdent]*[a-e-i-o-r-u-y-ā-ē-ī-ō-ū][a-e-i-m-n-o-r-u-y-ā-ē-ī-ō-ū]_" . .