bbb bbo bbr bob boo bor bov boz brb bro brr brv brz bvb bvo bvr bvv bzo bzr bzz ob- obb obo obr obv oo- oob ooo oor oov or- orb oro orr orv orz ov- ovb ovo ovv ozo ozz rbb rbo rbr rob roo ror rov roz rrb rrr rvb rvo rvr rvv rzb rzo vbo vbr vbv vbz vob voo vor vov voz vrb vrr vvb vvo vvr vvv vvz zbb zbr zbv zo- zob zoo zor zro zzr zzz

bbbb bobb bobo boob boor booz bor- boro borr borz bovo bozo brob broo bror broz brrr bzzz obbo obor obro oooo orbb orbo oro- oror oroz orro orvr orzo ovo- ovoo rbbb rbbr rob- robb robo roob roor rooz roro rovo rozz rrrr voor vor- voro vvob vvvv z-ro zobo zoo- zorb zoro zozo zzzz

bo-bo bobov bobr borbo boro- boroo borov borro borvo bozoo bozov brobo brrrr o-r-b oboro obrov obzor ooooo oovoo orobo ozoro ro-ro robbo robo- robor rozov v-bob v-bor vrbov zorbo zorro zzzzz

bbbbbb bobovo bobrov booboo borbor bororo borovo oooooo robovo vrbovo vvvvvv zborov zoozoo zorzor

bbbbbbb boo-boo oroboro rozborz

bbbbbbbb bo-bo-bo vorovoro

borborbor

bbbbbbbbbbbbbbb bzzzzzzzzzzzzzz