b-u bbb bbc bbo bbr bbu bcb bcc bco bcr bcu bob boc boo bor bou brb bro brr bru bub buc buo bur buu c-- cbb cbc cbo cbr cbu ccb ccc cco ccr ccu co- cob coc coo cor cou crb crc cro crr cru cub cuc cuo cur cuu ob- obb obc obo obr obu oc- ocb occ oco ocr ocu oo- oob ooc ooo oor or- orb orc oro orr oru ou- ouc ouo our rbb rbc rbo rbr rbu rcb rcc rco rcr rcu rob roc roo ror rou rrb rrc rrr rru rub ruc ruo rur ruu ubb ubc ubo ubr ubu ucb ucc uco ucr ucu uob uoc uoo uor ur- urb urc uro urr uru uuc uur uuu

bbbb bbrc bcbc bccc bcor bcru bcuc bobb bobo bobu boco bocu boob booc boor bor- boro borr boru bour brcb brob broc broo bror brou brrr bruc bubb bubo bubu bucc buco bucu bur- burb buro burr buru c-bo cbbc cbcc cbcr cbcu ccbc cccb cccc cccu ccob ccoc ccrc ccuc cobb cobo cobu coco cocu coob cor- corb corc coro corr coub cour crbc crbu crcc crcr crob croc croo cror crub cub- cubb cucc curb curo curr obbo obor obro ocbc occc ocro ocrr ocur oocr oooo orbb orbo orbu orco oro- oror orro orub oucc our- ouro ouu- rbbb rbbr rcbc rcbo rccb rccc rob- robb robo robu rocc roco roob roor rorc roro roru roub rrrr rubb rubu rurc ruro ruru ubbo uboc ucbc ucrc uocc uor- uro- uroo urur uuoc uuuu

bo-bo boboc bobr bocor booco booru borbo boro- boroo borou borro brobo brrrr bucco bucur burcu buroo burro burru buruc c-cor ccccc co-bo co-co cocc- cocco cocur corbo corbu coro- couco couru croco cruor cubo- cubub cuoco curro o-r-b oboro occur ocr-b ooooo orobo oroco oruro ouoro r-co- ro-ro robbo robo- robor robur rocco rocor rocou rorbu rubor ubobo uroob urour urubu urucu uuuuu

bbbbbb boccob booboo borbor bororo boubou bourou brocco brocor brubru bububu bucco- burbur cobbob cocco- cococo coocoo corour coruco coruro courbu courr- crocco cruro- cucurb curour curror cururo occour oooooo orrour rococo roucou rubro- ruocco

bbbbbbb boo-boo bourrou cooccur corrour cou-cou oroboro rococco rubbour ububboo

bbbbbbbb bo-bo-bo broubrou buruburu co-occur cocoroco corocoro cucurucu curucucu ubbubboo

borborbor couroucou roocoocoo

rococococo

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