bbb bbk bbo bbr bkb bkk bko bkr bob bok boo bor brb brk bro brr kbb kbk kbo kbr kkb kkk kkr kob kok koo kor krk kro krr ob- obb obk obo obr okb okk oko okr oo- oob ook ooo oor or- orb ork oro orr rbb rbk rbo rbr rkb rkk rko rob rok roo ror rrb rrk rrr

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b-r-k bbook bo-bo bobko bobok bobr bokko bokok bokor booko borbo borko boro- borok boroo borro brobo brrrr k-rob ko-ko kokko kokor korbo koror korro o-r-b oboro obrok okobo okoro ooooo orobo ro-ro robbo robo- robor rokkk

bbbbbb bobrok bokoro booboo borbor boroko bororo brokkr koboko kokoro kookoo korkor kororo ookroo oooooo rokkor

bbbbbbb bok-bok boo-boo boobook kobroor kor-kor korkoro oroboro

bbbbbbbb bo-bo-bo kokborok

borborbor

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