"_re ⇌ u_ / [-spread]*[-spread -labdent -high][a-e-i-o-r-u-y-ā-ē-ī-ō-ū][c-d-g-k-l-r-s-t-z]_ī_" . . . "_re ⇌ u_ / [-spread]*[-spread -labdent -high][a-e-i-o-r-u-y-ā-ē-ī-ō-ū][c-d-g-k-l-r-s-t-z]_ī_" . .