" ⇌ to / [-labdent]*[+voice -spread -labdent -low][a-b-c-d-e-g-k-o-p-q-s-t-y-z-ā-ē-ō][-approx -lat -low][a-e-n-r-ā-ē][e-m-n-o-ē-ō]_s" . . . " ⇌ to / [-labdent]*[+voice -spread -labdent -low][a-b-c-d-e-g-k-o-p-q-s-t-y-z-ā-ē-ō][-approx -lat -low][a-e-n-r-ā-ē][e-m-n-o-ē-ō]_s" . .