bbbb bbox bcbc bccc bctc bcuc bobb bobo bobu bock boco bocu boko boku boob booc book boot boox botb boto bott bouk bout btcc btcx btob bttb bubb bubo bubu bucc buck buco bucu bukk buko buku but- buto butt c-bo cbbc cbcc cbct cbcu cbko cbot cbox cbtc cbux ccbc cccb cccc cccu ccob ccoc cctb cctc cctt ccuc ccut ckbc ckbx ckck ckco ckcx ckob ckoc ckoo ckot cktb cobb cobo cobu cock coco coct cocu cok- coko coob cook coot cotb cotc coto cott cotu coub couk cout coux ctot cub- cubb cucc cuck cuk- cut- cutc cuto cutt cxxx kbbb kbbc kbbk kbbo kbbt kbbu kbcb kbck kbco kbct kbcu kbkb kbkk kbko kbob kboc kbok kboo kbot kbox kbtb kbtc kbtk kbto kbtt kbub kbuc kbuk kbut kbuu kbux kbxb kbxt kbxx kc-x kcbc kcbk kcbu kcbx kccb kccc kcck kcct kccu kckc kckk kcko kckx kcob kcot kcou kcox kctb kctc kcto kctu kctx kcub kcuk kkbb kkbo kkbt kkcb kkck kkco kkct kkkk kkob kkoo kkot kktc kktk kktu kktx kkut kkuu kkxk kkxt kkxx kobb kobc kobk kobo kobu kocb kock koct kokb kokc kokk koko koku kokx koob kooc kook kooo koot koou kotb kotc kotk koto kott kotu koub kout kouu koxc ktbb ktbc ktbt ktbu ktcc ktck ktco ktcx ktkb ktkc ktkk ktko ktkt ktku ktkx ktob ktoc ktok ktoo ktot ktox kttc kttk ktto kttt kttu kttx ktub ktuc ktux ktxb ktxc ktxk ktxo ktxt kubb kubc kubo kubu kucb kucc kuco kukk kuku kuok kuoo kuto kutt kutu kutx kuub kuuk kuuu kuxx kxbt kxbx kxkc kxkk kxkt kxku kxkx kxok kxoo kxox kxtc kxtk kxto kxtt kxtx kxxk kxxo kxxt kxxx obbo obkb obok obot obox ocbc occc occt oct- octo okcu okko okok okot okto ooku oooo ootb oto- otok otoo otto ottu oucc out- outb outo ouu- oxo- oxox oxxo tbcb tbcc tbox tccc tccu tctc tobo tobt tobu tock toco toko toku took toot totc toto tott touk tout tox- toxo toxt ttbb tttt tubb tubo tubu tucc tuck tuco tuko tuto tutt tutu tuuo ubbo uboc ucbc ucut ukcc ukko ukok uocc utto uttu uuoc uuuu xbox xobc xoco xout xoxo xuxu xxxo xxxx