b-u bbb bbc bbf bbk bbo bbr bbu bcb bcc bcf bck bco bcr bcu bfb bfc bff bfo bfr bfu bkb bkc bkf bkk bko bkr bob boc bof bok boo bor bou brb brf brk bro brr bru bub buc buf buk buo bur buu c-- cbb cbc cbf cbk cbo cbr cbu ccb ccc ccf cck cco ccr ccu cfb cfc cff cfk cfo cfr cfu ckb ckc cko co- cob coc cof cok coo cor cou crb crc crf crk cro crr cru cub cuc cuf cuk cuo cur cuu fbb fbc fbf fbk fbo fbr fbu fcb fcc fcf fck fco fcr fcu ffc fff ffk ffo ffr ffu fkb fkc fkf fkk fob foc fof fok foo for fou frb frc frf frk fro frr fru fub fuf fuk fuo fur fuu kbb kbc kbf kbk kbo kbr kbu kcb kcc kck kcr kcu kfc kff kfo kfu kkb kkc kkk kkr kku kob koc kof kok koo kor kou krc krf krk kro krr kru kub kuc kuk kur kuu ob- obb obc obf obk obo obr obu oc- ocb occ ocf ock oco ocr ocu of- ofb ofc off ofo ofr ofu okb okc okk oko okr oku oo- oob ooc oof ook ooo oor or- orb orc orf ork oro orr oru ou- ouc ouf ouk ouo our rbb rbc rbf rbk rbo rbr rbu rcb rcc rcf rco rcr rcu rfb rfc rff rfk rfo rfr rfu rkb rkc rkf rkk rko rku rob roc rof rok roo ror rou rrb rrc rrf rrk rrr rru rub ruc ruf ruk ruo rur ruu ubb ubc ubf ubk ubo ubr ubu ucb ucc ucf uck uco ucr ucu ufc uff ufo ufr ufu ukb ukc ukf ukk ukr uku uob uoc uok uoo uor ur- urb urc urf urk uro urr uru uuc uur uuu

bbbb bbfc bbrc bcbc bccc bcfc bcof bcor bcru bcuc bobb bobo bobu bock boco bocu boff bofu boko boku boob booc boof book boor bor- borf bork boro borr boru bouf bouk bour brcb brfc brfu brkb brob broc brok broo bror brou brrr bruc bubb bubo bubu bucc buck buco bucu bufc buff bufo bufr bukk buko buku bur- burb burk buro burr buru c-bo cbbc cbcc cbcr cbcu cbfb cbfc cbko cbkr ccbc cccb cccc cccf cccu ccfc ccff ccob ccoc ccrc ccrf ccuc cfbc cfbr cfcb cfcf cfco cffb cffr cfor cfrb ckbc ckck ckco ckfr ckob ckoc ckoo ckor ckrc cobb cobo cobu cock coco cocu cofc coff cok- coko coob coof cook cor- corb corc corf cork coro corr coub couk cour crbc crbu crcc crcr crfc crkc crob croc crok croo cror crub cruk cub- cubb cucc cuck cufc cuff cufo cuk- curb curf curo curr f--k fccf fcuk ffcc ffff ffrr fock foco fofo foof fook for- forb fork foro forr four frbc frcc frfc frob frou frub fubb fubu fuc- fuck fufc fuff fufu fukk fuko fuku fuor fur- furo furr kbbb kbbc kbbf kbbk kbbo kbbr kbbu kbcb kbck kbco kbcr kbcu kbfb kbfc kbff kbfk kbfo kbfr kbkb kbkf kbkk kbko kbkr kbob kboc kbok kboo kbrb kbrc kbrf kbrk kbro kbru kbub kbuc kbuf kbuk kbur kbuu kcbc kcbf kcbk kcbr kcbu kccb kccc kcck kccr kccu kcfb kcfc kcfo kckc kckf kckk kcko kckr kcob kcof kcor kcou kcrc kcro kcrr kcru kcub kcuf kcuk kfbc kfbk kfcf kfco kfcr kffb kfff kffk kfkb kfok kfoo kfor kfrc kfro kfrr kfru kfuo kkbb kkbo kkbr kkcb kkck kkco kkcr kkfr kkkk kkob kkoo kkor kkrb kkrc kkrf kkrk kkro kkrr kkuu kobb kobc kobk kobo kobr kobu kocb kocf kock kofc koff kofk kofo kofu kokb kokc kokf kokk koko kokr koku koob kooc kook kooo koor koou korb korc korf kork koro korr koru koub kour kouu krbb krbk krbr krcb krcc krco krcu krfc krff krfo krkc krkk krko krkr krku krob kroc krof krok kroo kror krrb krrc krrf krrk krro krrr kruc kruf kruk krur kubb kubc kubo kubr kubu kucb kucc kuco kucr kufc kuff kufo kufr kukk kuku kuok kuoo kurb kurk kuro kurr kuru kuub kuuk kuur kuuu obbo obkb obok obor obro ocbc occc ocro ocrr ocur ofcr off- offc offo offr offu ofor okcu okko okok okor okro okur oocr ooff ooku oooo orbb orbo orbu orco orff orfu orko oro- orof orok oror orro orub oucc oufc ouff our- ouro ouu- rbbb rbbr rcbc rcbo rccb rccc rcfc rffc rkkf rob- robb robo robu rocc rock roco rofc roff rofo rokk roko rokr roku roob roof rook roor rorc rork roro roru roub rouf rouk rrfc rrrr rubb rubu ruck rufc ruff rufo rukk ruku ruok rurc ruro ruru ubbo uboc ucbc ucfb ucrc ufcu ufuk ukcc ukko ukok ukrc ukur uocc uofo uor- urff uro- urok uroo uruk urur uuoc uuuu

b-r-k bbook bcock bo-bo bobko boboc bobok bobr bocor boffo bokko bokok bokor boock booco booko booru borbo borck borko borku boro- borok boroo borou borro bouck bouko brcko brobo brock brook brouk brrrr bruck bruff bucco bucko bucku bucur buffo bukk- bukor burck burcu buroo burro burru buruc buruk c-cor ccccc cfour co-bo co-co cocc- cocco cocur cofur cokk- corbo corbu corfo corfu coro- couco courb couru crock croco crook crouk cruck cruor cubo- cubub cucuk cukor cuoco curro forro forur fourb fouro frock fruko fu-fu fucko fuco- fuoco furbo furo- furor k-rob ko-ko kobru kobuk kokko kokor kokou kokur kooru korbo korck korff korku koror korro koruk koufu krock krufc kubok kucuk kukko kukok kukur kurbu kurku kuruc kuruk o-r-b obock oboro obrok occur ockro ocr-b offof ofour okkur okobo okoc okoro okubo okuku okuru ooooo orfor orobo oroco oruku oruro ouoro r-co- ro-ro robbo robo- robor robur rocco rocko rocor rocou rofor rokkk rorbu rouko rubof rubor ruffo rufo- ubobo ufofu uforb ukobu uroob urour urubu urucu uuork uuuuu

bbbbbb bobfoc bobrok boccob bocock bokoro booboo bookof borbor