"s ⇌ de / X+[a-e-i-m-n-o-r-u-y-ā-ē-ī-ō-ū]_" . . . "s ⇌ de / X+[a-e-i-m-n-o-r-u-y-ā-ē-ī-ō-ū]_" . .