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