bbb bbc bbo bbr bcb bcc bco bcr bob boc boo bor brb bro brr c-- cbb cbc cbo cbr ccb ccc cco ccr co- cob coc coo cor crb crc cro crr ob- obb obc obo obr oc- ocb occ oco ocr oo- oob ooc ooo oor or- orb orc oro orr rbb rbc rbo rbr rcb rcc rco rcr rob roc roo ror rrb rrc rrr

bbbb bbrc bcbc bccc bobb bobo boco boob booc boor bor- boro borr brcb brob broc broo bror brrr c-bo cbbc cbcc cbcr ccbc cccb cccc ccob ccoc ccrc cobb cobo coco coob cor- corb corc coro corr crbc crcc crcr crob croc croo cror obbo obor obro ocbc occc ocro ocrr oocr oooo orbb orbo orco oro- oror orro rbbb rbbr rcbc rcbo rccb rccc rob- robb robo rocc roco roob roor rorc roro rrrr

bo-bo boboc bobr bocor booco borbo boro- boroo borro brobo brrrr c-cor ccccc co-bo co-co cocc- cocco corbo coro- croco o-r-b oboro ocr-b ooooo orobo oroco r-co- ro-ro robbo robo- robor rocco rocor

bbbbbb boccob booboo borbor bororo brocco brocor cobbob cocco- cococo coocoo crocco oooooo rococo

bbbbbbb boo-boo oroboro rococco

bbbbbbbb bo-bo-bo cocoroco corocoro

borborbor roocoocoo

rococococo

bbbbbbbbbbbbbbb ccccccccccccccc