bhoom bhour bo-bo bo-ho bobr bogor bogu bogur bohor bombo bomoh boomb booru borbo borgh borgo borgu bormo boro- borom boroo borou borro borum bough bourg brmmm brobo brogh brohm brom- bromo broom brrrr brugg brugh brumm bugoo bumbo bumbu buoho burgh burgo burgu buroo burro burru ghoom ghour ghubb go-go go-oo gobbo gogro gohog gohor gohur gombo gomoh gomor gomur goobo goooh gorgo goruh gough grgur grogg gromo groom grrrr grubb grumo gubbo gubru gumbo gummb gummo guroo gurro gurum gurur hbogo hbomb hhhhh hhour ho-ho ho-oh hobor hobro hobub hohum homo- homog horom horro horru hough hu-go hubur huggo huhuh humbo humor humur hurm hurum huuru mbogo mboro mburu mhorr mmhmm mmmmm mobor mobro mohor mohrg mohur mombo mombu moogo mooro morbo mormo moror morou morro morum mough mrmom mrorr mugho mugur mumbo mummu murgh murgo murom muror murrh murro murru murum o-hum o-r-b obhor oboro obrom oghum oghur ogogo ogugu oh-oh ohmmm ohour ohrob ohrum omoro ooooh ooooo orbom ormur orobo oromo orrgo orrum oruro ouoro rhomb rhumb ro-ro robbo robo- robor robur rogho rohob rohru roomu rorbu rough roumm rubor rughh ruhub rumbo rummo rummu rumor ruomu ubobo ugro- ugrug uh-oh uh-uh uhhoh uhhuh uhuru umbro umhum umour uroob urour urubu uuuuu