"ī ⇌ iētur / [-spread -lat -labdent]*[b-d-h-m-n-p-r-s-t-z-th-ph][a-e-o][d-r-s-t-z]_" . . . "ī ⇌ iētur / [-spread -lat -labdent]*[b-d-h-m-n-p-r-s-t-z-th-ph][a-e-o][d-r-s-t-z]_" . .