"th_c ⇌ t_cho / c?[a-b-d-e-o-p-s-t-z-ā-ē-ō][e-l-o-r-ē-ō]l[i-y-ī]_ri_s" . . . "th_c ⇌ t_cho / c?[a-b-d-e-o-p-s-t-z-ā-ē-ō][e-l-o-r-ē-ō]l[i-y-ī]_ri_s" . .