b-r-k bbook bkorn bo-bo bobko bobok bobr bokko bokok bokor bonon booko boonk boorn borbo borko born- borno boro- borok boron boroo borro brobo bronk bronn brook broon brrrr k-rob knokk knork knorr ko-ko kokko kokor konno konro koorn korbo korno koron koror korro kronk kroon nnooo no-no nobob nokko nokon nonno norok noron norro o-bon o-r-b oboro obrok okobo okoro onoon onorn ooooo ornon orobo orono ro-ro robbo robo- robon robor rokkk rokon ronk- ronko ronno ronok