-hou bbbb bbch bbci bcbc bccc bcci bcit bctc bcuc bhcc bhit bhoi bhot bhut bhuu bibb bibi bibo bicc bich bici bico bihi bihu bio- bioc bioi biot biou bitc bith bito bitt bitu bobb bobi bobo bobu boch boco bocu boho boht bohu boi- boii boit boiu boob booc booh boot botb both boti boto bott bouh bout btcc btob bttb bubb bubi bubo bubu bucc buch buci buco bucu buhi buho buic buit buiu but- buti buto butt c-bo cbbc cbcc cbct cbcu cbit cbot cbtc ccbc cccb cccc ccci cccu ccic ccii ccob ccoc cctb cctc cctt ccuc ccut chch chci chib chic chih chit chiu choc choh choi choo chou chto chtt chub chui chut cibc cibi cibo cicc cich cici cico cict cicu ciht ciii ciit ciob citb cith citi cito citt citu ciuc cobb cobh cobi cobo cobu coch coco coct cocu coho coit coob cooh coot cotb cotc coth coti coto cott cotu coub cout ctbi ctic ctot cub- cubb cubi cucc cuci cui- cuit cut- cutc cuth cuto cutt h-ii hbic hbio hbit hboc hbtu hcbc hccb hccc hcch hchi hhhh hi-c hibi hibt hibu hicc hich hico hihc hihi hiho hiht hiit hiiu hiob hioc hitc hiti hito hitt hobo hoch hoho hoit hoot hotb hoth hoti hoto hott hotu hout htcc htoh hubb hubi hubo huch hucu huhi huhu huib huit huot huth huti huto hutt hutu huub ibot ibtb ibtc icbc iccb iccc icci icco icct iccu ichc ichi icho ichu icoc icub ihcc ihit ihob ihtc ihub ihuo iiht iiii iiio iiit iioi iioo iitt iiuc iobi ioci ioii ioio ioit iooi iooo ioto itch ithc itic itoh itoi itoo itou itto iucc iuiu obbo obit oboi obot obuh ocbc occc occi occt ochi ocht oct- octi octo ohcc ohhi ohho ohio ohob ohoh ohto ohtu oici oiii oitc oiti oobi ooho oooh oooo ootb otho otic otit oto- otoh otoo otti otto ottu oucc ouch ouii ouit out- outb outh outi outo ouu- tbcb tbcc tbit tccc tccu tch- tchh tchi tcho tchu tctc thch thi- thic thio thoo thot thou thtb tibi tibu ticc tich tico tiht tihu tiit tiiu tiou titc tith titi tito titt titu tobi tobo tobt tobu toch toci toco tohi toho tohu toit tooh toot totc toth toti toto tott touh toui tout ttbb tttt tubb tubo tubu tucc tuch tuco tuht tuhu tuit tuiu tuti tuto tutt tutu tuuo ubbi ubbo ubic ubii ubit uboc ucbc ucci uchi ucho ucio ucut uhoh uhti uhuh uocc utti utto uttu uuoc uuuu