b-r-k bbook bo-bo bobko bobok bobr bokko bokok bokor bombo booko boomb boort borbo borko bormo boro- borok borom boroo borot borro botok botom botro brmmm brobo brom- bromo brook broom broto brrrr btr-t k-rob k-t-b ko-ko kokko kokor kokot kombo korbo korom koror korro kotor kotto kromo kroot krtok mboro mmmmm mobor mobot mobro mokko mokro mombo momot mookk mooro mooto morbo mormo moror morro moto- motor motto mrmom mrorr mt-tk mt-tm mt-tr mt-tt mtoto o-r-b oboro obrok obrom okobo okoro oktmo omoro omoto ooooo orbom orbot orkom orobo oromo ortok ortoo otomo ototo otrok ottom ro-ro robbo robo- robor robot robrt rokkk rokot rokto rotko roto- rotor rotot rotto rt-rk tbtbt tobor tobot tokko toko- tokor tombo tomko tommo tomo- tomom tomor torob torok torro torto toto- totok totoo tromm trott ttttt