-th b-u bbb bbc bbh bbk bbo bbs bbt bbu bcb bcc bch bck bco bcs bct bcu bhb bhc bhh bhk bho bhs bht bhu bkb bkc bkk bko bks bkt bob boc boh bok boo bos bot bou bsb bsc bsh bsk bso bss bst bsu btb btc bth btk bto bts btt btu bub buc buh buk buo bus but buu c-- cbb cbc cbh cbk cbo cbs cbt cbu ccb ccc cch cck cco ccs cct ccu ch- chb chc chh chk cho chs cht chu ckb ckc ckh cko cks ckt co- cob coc coh cok coo cos cot cou csb csc csh csk cso css cst csu ctb ctc cth ctk cto cts ctt ctu cub cuc cuh cuk cuo cus cut cuu hbb hbc hbh hbk hbo hbs hbt hbu hcb hcc hch hck hco hcs hct hhb hhc hhh hhk hho hhs hht hhu hkb hkh hkk hko hks hkt hku hob hoc hoh hok hoo hos hot hou hsb hsc hsh hsk hss hst hsu htb htc hth htk hto hts htt hub huc huh huk huo hus hut huu k-t kbb kbc kbh kbk kbo kbs kbu kcb kcc kch kck kcs kct kcu khh khk kho khs khu kkb kkc kkh kkk kks kkt kku kob koc koh kok koo kos kot kou ksb ksc ksh ksk kso kss kst ksu ktb ktc kth ktk kto kts ktt ktu kub kuc kuh kuk kus kut kuu ob- obb obc obh obk obo obs obt obu oc- ocb occ och ock oco ocs oct ocu ohc ohh oho ohs oht ohu okb okc okk oko oks oku oo- oob ooc ooh ook ooo oos oot os- osb osc osh osk oso oss ost osu ot- otb otc oth otk oto ots ott otu ou- ouc ouh ouk ouo ous out sbb sbc sbh sbk sbo sbs sbt sbu scb scc sch sck sco scs sct scu sh- shb shc shh shk sho shs sht shu sk- skb skc skh skk sko sks skt sku sob soc soh sok soo sos sot sou ss- ssb ssc ssh ssk sso sss sst ssu stb stc sth stk sto sts stt stu sub suc suh suk suo sus sut suu tbb tbc tbh tbk tbo tbs tbt tbu tcb tcc tch tck tco tcs tct tcu th- thb thc thh thk tho ths tht thu tkb tkc tkk tko tks tkt to- tob toc toh tok too tos tot tou tsb tsc tsh tsk tso tss tst tsu ttb ttc tth ttk tto tts ttt ttu tub tuc tuh tuk tuo tus tut tuu ubb ubc ubh ubk ubo ubs ubt ubu ucb ucc uch uck uco ucs uct ucu uhb uhc uhh uho uhs uht uhu ukb ukc ukk uku uob uoc uok uoo uos uot usb usc ush usk uso uss ust usu utb utc uth utk uto uts utt utu uuc uus uut uuu

-hou -ous bbbb bbbs bbch bbhs bcbc bcbs bccc bccs bchs bcos bcsc bcss bctc bcts bcuc bhcc bhhs bhot bhut bhuu bkhs bobb bobo bobs bobu boch bock boco bocs bocu boho bohs boht bohu boko boks boku boob booc booh book boos boot bosc bosh bosk boso boss bost bosu botb both boto bots bott bouh bouk bous bout bscs bshs bskt bsos bssc bsts btcc btcs bths btob btss bttb btus bubb bubo bubs bubu bucc buch buck buco bucs bucu buho buhs bukh bukk buko buku busc bush busk buss bust busu but- buto buts butt buus c-bo cbbc cbbs cbcc cbcs cbct cbcu cbhs cbko cbot cbsc cbtc cbus ccbc cccb cccc cccs cccu cchs ccob ccoc ccss ccst cctb cctc cctt ccuc ccus ccut chch chcs chhs chkb chks chkt choc choh chok choo chos chou chsc chsh chst chto chtt chub chuk chus chut ckbc ckch ckck ckco ckcs ckhs ckob ckoc ckoo ckos ckot cksb cksh ckso ckst cktb ckts cobb cobh cobo cobs cobu coch cock coco coct cocu coho cohs cok- coko coob cooh cook coos coot cosc cosh coso coss cost cotb cotc coth coto cots cott cotu coub couk cous cout cscb cscc csch csco cscs cshs csks csob csos csot cstc csto csts csus ctbs cths ctos ctot ctsc ctss ctsu ctts cub- cubb cubs cucc cuck cuk- cusb cush cusk cuso cuss cust cusu cut- cutc cuth cuto cuts cutt hbbs hbhs hboc hbos hbss hbtu hcbc hcbs hccb hccc hcch hccs hchs hcsc hcso hcss hcst hhhh hhhs hhus hkbu hkcc hkcs hkst hobo hobs hoch hock hocs hoho hoko hoks hoku hook hoos hoot hosh hoss host hotb hoth hoto hots hott hotu houk hout hsbc hscc hsct hshs hsob hsts htcc hths htoh htsc hubb hubo hubs huch huck hucs hucu huhs huhu huos huot hush husk huso huss hust huth huto huts hutt hutu huub huus k-os kbbb kbbc kbbk kbbo kbbs kbbt kbbu kbcb kbch kbck kbco kbcs kbct kbcu kbhb kbhc kbhh kbhs kbht kbkb kbkk kbko kbob kboc kbok kboo kbos kbot kbsb kbsk kbso kbss kbst kbsu kbtb kbtc kbtk kbto kbts kbtt kbub kbuc kbuk kbus kbut kbuu kcbc kcbk kcbs kcbu kccb kccc kcck kcct kccu kchh kchk kcho kchs kchu kckc kckk kcko kcob kcoh kcos kcot kcou kcsb kcsc kcss kcst kcsu kctb kctc kcto kctu kcub kcuh kcuk khbc khbs khbt khcb khcc khch khck khcs khct khhk khho khhs khkk khks khob khoc khok khot khou khss khst khsu khtb khth khtk khto khts khtt khub khuk khus khut kkbb kkbo kkbs kkbt kkcb kkch kkck kkco kkcs kkct kkhb kkhh kkhk kkkk kkob kkoh kkoo kkot kkss kkst kksu kktc kktk kkts kktu kkus kkut kkuu kobb kobc kobk kobo kobs kobu kocb koch kock kocs koct kohh koho kohs koht kohu kokb kokc kokh kokk koko koks koku koob kooc kook kooo koos koot koou kos- kosb kosc kosh koso koss kost kosu kotb kotc koth