b-r-k bbook bhook bhool blook bloor blorb bo-bo bo-ho bobko bobok bobr bohok bohol bohor bokko bokok bokor bolho bolko boll- bollo bolok booko borbo borko boro- borok boroo borro brloh brobo brohl broll brolo brook brool brrrr hhhhh hlokk ho-ho ho-oh hobol hobor hobro hohol hoklo holbr hollo holo- holor horol horro k-rob kbool khoro ko-ko kobol kohol kokko kokor kolho kollo kolob kolol korbo korol koror korro kroll lobbo lobo- lobor lohho lollo lolol o-r-b obhor obolo oboro obrok oh-oh oh-ok ohrob okobo okoho okoro ooooh ooooo orlok orobo ro-ro robbo robo- robor rohob rokkk rollo rolok rookh