"i_ī ⇌ a_um / [a-b-d-e-o-p-r-s-t-z-ā-ē-ō]*[b-d-e-p-r-s-t-z-ē]*st_t_" . . . "i_ī ⇌ a_um / [a-b-d-e-o-p-r-s-t-z-ā-ē-ō]*[b-d-e-p-r-s-t-z-ē]*st_t_" . .