-hou bbbb bbch bcbc bccc bcnu bctc bcuc bhcc bhot bhut bhuu bnoc bobb bobo bobu boch boco bocu bohn boho boht bohu bonc bonn bono bont bonu boob booc booh boon boot botb both botn boto bott bouh boun bout btcc btob bttb bubb bubo bubu bucc buch buco bucu buho bunb bunn buno bunt bunu buon but- buto butt c-bo cbbc cbcc cbcn cbct cbcu cbot cbtc ccbc ccbn cccb cccc cccu ccnb ccnc ccnu ccob ccoc cctb cctc cctt ccuc ccut chch chnb chnc chno choc choh chon choo chou chto chtt chub chun chut cnbc cnco cnoh cntc cnut cobb cobh cobo cobu coch coco coct cocu cohn coho con- conc conn cono cont coob cooh coon coot cotb cotc coth cotn coto cott cotu coub coun cout ctot cttn cub- cubb cucc cucn cuno cunt cuon cut- cutc cuth cuto cutt hboc hbtu hcbc hccb hccc hcch hhhh hntb hobo hoch hocn hohn hoho hono hont honu hoon hoot hotb hoth hoto hott hotu hout htcc htoh hubb hubo huch hucu huhn huhu hunc hunh hunt huon huot huth huto hutt hutu huub nbbc nbbo nbcc nbco ncbc nccc nccn ncct nccu nchc ncnc ncoc nctc nhcc nhnn nhon nnnn nnot nntn nobc nobo nobu noch noco noct nohn noho noht non- nonn nono nont nonu noo- noob noon nooo noot not- noth noto nott nouh noun nout ntbc ntcc nthn ntht ntnu ntto ntuc nubc nuch nucu nunc nunn nuno nunt nuoc nuon nuth nutt nutu obbo obon obot obuh ocbc occc occn occt ocht ocon oct- octo ohcc ohho ohno ohob ohoh ohto ohtu onc- onco onct onno onon ont- ontc onto onut ooho oont oooh oooo ootb otho oto- otoh oton otoo otto ottu oucc ouch oun- out- outb outh outo ouu- tbcb tbcc tccc tccu tch- tchh tcho tchu tcnn tcon tctc thch thnt thon thoo thot thou thtb thun tnbc tncc tnut tobo tobt tobu toch toco toho tohu tonb tonh tonn tono tonu tooh toon toot totc toth toto tott touh toun tout ttbb ttcn tton tttt tubb tubo tubu tucc tuch tuco tuht tuhu tunb tunc tunn tuno tunu tuto tutt tutu tuuo ubbo uboc ubon ucbc ucho ucon ucut uhno uhoh uhuh uncc unch unco unct unno unon untb unth unto unut uocc utto uttu uuno uuoc uuuu