b-u bbb bbo bbr bbu bob boo bor bou bov brb bro brr bru brv bub buo bur buu bvb bvo bvr bvu bvv ob- obb obo obr obu obv oo- oob ooo oor oov or- orb oro orr oru orv ou- ouo our ov- ovb ovo ovv rbb rbo rbr rbu rob roo ror rou rov rrb rrr rru rub ruo rur ruu ruv rvb rvo rvr rvu rvv ubb ubo ubr ubu ubv uob uoo uor ur- urb uro urr uru uur uuu uvb uvo uvu uvv vbo vbr vbv vob voo vor vou vov vrb vrr vru vur vuv vvb vvo vvr vvv

bbbb bobb bobo bobu boob boor bor- boro borr boru bour bovo brob broo bror brou brrr bruv bubb bubo bubu bur- burb buro burr buru obbo obor obro oooo orbb orbo orbu oro- oror orro orub orvr our- ouro ouu- ovo- ovoo rbbb rbbr rob- robb robo robu roob roor roro roru roub rovo rrrr rubb rubu ruro ruru ruvu ubbo uor- uovo uro- uroo urur uuuu uv-b uvvu voor vor- voro voru vour vurb vvob vvvv

bo-bo bobov bobr booru borbo boro- boroo borou borov borro borvo brobo brrrr buroo burro burru o-r-b oboro obrov ooooo oovoo orobo oruro ouoro ro-ro robbo robo- robor robur rorbu rubor ubobo uroob urour urubu uuuuu uvrou v-bob v-bor voobu vooru vrbov

bbbbbb bobovo bobrov booboo borbor bororo borovo boubou bourou brubru bububu burbur burovo oooooo orrour robovo rubro- vrbovo vvvvvv

bbbbbbb boo-boo bourrou oroboro rubbour ububboo

bbbbbbbb bo-bo-bo broubrou buruburu ubbubboo vorovoro

borborbor

vourvourou

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