b-u bbb bbc bbh bbk bbo bbr bbu bcb bcc bch bck bco bcr bcu bhb bhc bhh bhk bho bhr bhu bkb bkc bkk bko bkr bob boc boh bok boo bor bou brb brh brk bro brr bru bub buc buh buk buo bur buu c-- cbb cbc cbh cbk cbo cbr cbu ccb ccc cch cck cco ccr ccu ch- chb chc chh chk cho chr chu ckb ckc ckh cko co- cob coc coh cok coo cor cou crb crc crh crk cro crr cru cub cuc cuh cuk cuo cur cuu hbb hbc hbh hbk hbo hbr hbu hcb hcc hch hck hco hcr hhb hhc hhh hhk hho hhr hhu hkb hkh hkk hko hkr hku hob hoc hoh hok hoo hor hou hr- hrb hrc hrh hrk hro hrr hru hub huc huh huk huo hur huu kbb kbc kbh kbk kbo kbr kbu kcb kcc kch kck kcr kcu khh khk kho khr khu kkb kkc kkh kkk kkr kku kob koc koh kok koo kor kou krc krk kro krr kru kub kuc kuh kuk kur kuu ob- obb obc obh obk obo obr obu oc- ocb occ och ock oco ocr ocu ohc ohh oho ohr ohu okb okc okk oko okr oku oo- oob ooc ooh ook ooo oor or- orb orc orh ork oro orr oru ou- ouc ouh ouk ouo our rbb rbc rbh rbk rbo rbr rbu rcb rcc rch rco rcr rcu rh- rhb rhc rhh rho rhr rhu rkb rkc rkk rko rku rob roc roh rok roo ror rou rrb rrc rrh rrk rrr rru rub ruc ruh ruk ruo rur ruu ubb ubc ubh ubk ubo ubr ubu ucb ucc uch uck uco ucr ucu uhb uhc uhh uho uhr uhu ukb ukc ukk ukr uku uob uoc uok uoo uor ur- urb urc urk uro urr uru uuc uur uuu

-hou bbbb bbch bbrc bcbc bccc bcor bcru bcuc bhcc bhor bhur bhuu bobb bobo bobu boch bock boco bocu boho bohr bohu boko boku boob booc booh book boor bor- borh bork boro borr boru bouh bouk bour brcb brkb brob broc broh brok broo bror brou brrr bruc bruh bubb bubo bubu bucc buch buck buco bucu buho buhr bukh bukk buko buku bur- burb burh burk buro burr buru c-bo cbbc cbcc cbcr cbcu cbko cbkr cbrh ccbc cccb cccc cccu cchr ccob ccoc ccrc ccuc chch chkb choc choh chok choo chor chou chrb chrc chro chrr chub chuk chur ckbc ckch ckck ckco ckob ckoc ckoo ckor ckrc cobb cobh cobo cobu coch cock coco cocu coho cok- coko coob cooh cook cor- corb corc cork coro corr coub couk cour crbc crbu crcc crcr crkc crob croc croh crok croo cror crub cruk cub- cubb cucc cuck cuk- curb curo curr hboc hcbc hccb hccc hcch hhhh hkbu hkcc hobo hoch hock hocr hoho hoko hoku hook hoor horc hork horo horr houk hour hrob hrrc hubb hubo huch huck hucu huhu huor hurk huro hurr huru huub kbbb kbbc kbbk kbbo kbbr kbbu kbcb kbch kbck kbco kbcr kbcu kbhb kbhc kbhh kbhr kbkb kbkk kbko kbkr kbob kboc kbok kboo kbrb kbrc kbrh kbrk kbro kbru kbub kbuc kbuk kbur kbuu kcbc kcbk kcbr kcbu kccb kccc kcck kccr kccu kchh kchk kcho kchr kchu kckc kckk kcko kckr kcob kcoh kcor kcou kcrc kcrh kcro kcrr kcru kcub kcuh kcuk khbc khbr khcb khcc khch khck khhk khho khkk khkr khob khoc khok khor khou khrk khro khrr khub khuk khur kkbb kkbo kkbr kkcb kkch kkck kkco kkcr kkhb kkhh kkhk kkhr kkkk kkob kkoh kkoo kkor kkrb kkrc kkrh kkrk kkro kkrr kkuu kobb kobc kobk kobo kobr kobu kocb koch kock kohh koho kohr kohu kokb kokc kokh kokk koko kokr koku koob kooc kook kooo koor koou korb korc kork koro korr koru koub kour kouu krbb krbk krbr krcb krcc krch krco krcu krhc krkc krkh krkk krko krkr krku krob kroc kroh krok kroo kror krrb krrc krrk krro krrr kruc kruh kruk krur kubb kubc kubo kubr kubu kucb kucc kuch kuco kucr kuhu kukh kukk kuku kuok kuoo kurb kurk kuro kurr kuru kuub kuuk kuur kuuu obbo obkb obok obor obrh obro obuh ocbc occc ocro ocrr ocur ohcc ohho ohob ohoh ohok okcu okko okok okor okro okur oocr ooho ooku oooh oooo orbb orbo orbu orch orco orko oro- orok oror orro orub oucc ouch our- ouro ouu- rbbb rbbr rboh rcbc rcbo rccb rccc rchb rhob rhoc rhoh rob- robb robo robu rocc roch rock roco rohr rohu rokh rokk roko rokr roku roob rook roor rorc rork roro roru roub rouh rouk rrrr rubb rubu ruch ruck ruhh ruhr rukh rukk ruku ruok rurc ruro ruru ubbo uboc ucbc ucho ucrc uhoh uhok uhuh ukcc ukko ukok ukrc ukur uocc uor- urch urho uro- urok uroo urrh uruk urur uuoc uuuu

b-r-k bbook bcock bhook bhour bo-bo bo-ho bobko boboc bobok bobr bochk bocho bocor bohok bohor bokko bokok bokor booch boock booco booko booru borbo borch borck borko borku boro- borok boroo borou borro bouch bouck bouko brcko brobo broch brock brook brouk brrrr bruch bruck bucco bucho buchu bucko bucku bucur bukk- bukor buoch buoho burch burck burcu buroo burro burru buruc buruk c-cor ccccc chock choco chokh choko chook choor chor- chork choro chouk chubb chuck chuko chur- churk churr churu chuuk co-bo co-co cocc- cocco cocur cohob cohoo cokk- cooch corbo corbu coro- couch couco courb couru crock croco crook crouk cruck cruor cubo- cubub cucuk cukor cuoco curch curro h-cho hcooh hhhhh hhour ho-ho ho-oh hobor hobro hobub hocco hokku hooch horch horro horru houch houck hourc hroch hubur hucch hucho huhuh hukok huork hurko hurok huuru k-rob khoku khoro khour khuru khuur ko-ko kobru kobuk kochu kokko kokor kokou kokur kooru korbo korck korku koror korro koruk kouch krock kubok kuchu kucuk kukko