b-r-k bbook bcock bo-bo bobko boboc bobok bobr bocor bokko bokok bokor boock booco booko borbo borck borko boro- borok boroo borro brcko brobo brock brook brrrr c-cor ccccc co-bo co-co cocc- cocco cokk- corbo coro- crock croco crook k-rob ko-ko kokko kokor korbo korck koror korro krock o-r-b obock oboro obrok ockro ocr-b okobo okoc okoro ooooo orobo oroco r-co- ro-ro robbo robo- robor rocco rocko rocor rokkk