bhour bo-bo bo-ho bobr bogor bogu bogur bohor booru borbo borgh borgo borgu boro- boroo borou borro bough bourg brobo brogh brrrr brugg brugh bugoo buoho burgh burgo burgu buroo burro burru ghour ghubb go-go go-oo gobbo gogro gohog gohor gohur goobo goooh gorgo goruh gough grgur grogg grrrr grubb gubbo gubru guroo gurro gurur hbogo hhhhh hhour ho-ho ho-oh hobor hobro hobub horro horru hough hu-go hubur huggo huhuh huuru o-r-b obhor oboro oghur ogogo ogugu oh-oh ohour ohrob ooooh ooooo orobo orrgo oruro ouoro ro-ro robbo robo- robor robur rogho rohob rohru rorbu rough rubor rughh ruhub ubobo ugro- ugrug uh-oh uh-uh uhhoh uhhuh uhuru uroob urour urubu uuuuu