"āb_ ⇌ _um / [-spread -lat -labdent]*[-spread -low][e-i-o-r-s-u-y-z-ē-ī-ō-ū][b-c-d-g-k-l-m-n-p-q-r-s-t-z]_it_" . . . "āb_ ⇌ _um / [-spread -lat -labdent]*[-spread -low][e-i-o-r-s-u-y-z-ē-ī-ō-ū][b-c-d-g-k-l-m-n-p-q-r-s-t-z]_it_" . .