bbb bbo bbr bbt bob boo bor bot brb bro brr brt btb bto btr btt ob- obb obo obr obt oo- oob ooo oor oot or- orb oro orr ort ot- otb oto otr ott rbb rbo rbr rbt rob roo ror rot rrb rrr rrt rtb rto rtr rtt tbb tbo tbr tbt to- tob too tor tot trb tro trr trt ttb tto ttr ttt

bbbb bobb bobo boob boor boot bor- boro borr bort botb boto bott brob broo bror brot brrr btob btor btrt bttb obbo obor obot obro oooo oort ootb orbb orbo oro- oror orot orro orto oto- otoo otor otro otto rbbb rbbr rob- robb robo robt roob roor root roro rort roto rotr rott rrrr tbrb tobo tobt toor toot toro torr tort toto totr tott troo trot trtr ttbb tttt

bo-bo bobr boort borbo boro- boroo borot borro botro brobo broto brrrr btr-t o-r-b oboro ooooo orbot orobo ortoo ototo ro-ro robbo robo- robor robrt roto- rotor rotot rotto tbtbt tobor tobot torob torro torto toto- totoo trott ttttt

bbbbbb booboo borbor bororo botoro brotto oooooo ottoor roboto toboot tootoo tororo tortor totoro totrot trotro

bbbbbbb boo-boo oroboro ottrott rootrot too-too tototoo tro-tro

bbbbbbbb bo-bo-bo toottoot torotoro

borborbor

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