-hou c-cd cccc cccu cccv ccdc ccdh cced ccee cche ccoc ccod ccuc ccvo cd-e cdec cdvd cec- cece ceco cedd cede cedo cedu ceec ceou cevo chce chch chec ched chee cheh cheu chev choc chod choh choo chou chov chud chvo coce coch coco cocu codd code coed coho cood cooh coud coue cove covo cucc cuce cude cued cuve cvcc dccc dccu dccv dche dcvd dddd ddoc dec- decc decd dece deco dedd dede dedo dedu deed deev dehu deue deve devo dhec dhed dhee dhod doce doch doco docu dod- dodd dode dodo dohc dood douc doud doue dove duce duch duco dudd dude dudo dudu duhe duhu duo- duve eccc ecce ecco ecdc eced eche echo eco- ecod ecou eddc edde eddo ede- edeh edoc edod edou educ edve eede eedu eeee eeoc ehcc ehdd eheh eheu ehud eocd eode eucd euch eude evoe evoo hccc hcch hdoc hdod hech hedd hede hedo heed hehe heho heou heue heve hhhh hoce hoch hode hodh hoed hohe hoho hood hooe houd houe hove huch hucu hudd hude hudo hudu hued huhu huve hvcc o-eo occc oce oced ocee oche oddd oded odeo odoh odoo odou oec- oecc oedo oeec ohcc ohed ohee ohho ohoh ooho oooh oooo oucc ouch oudc oude oudh oued ouu- ovde ovee ovhd ovo- ovod ovoo ucdc ucdd uche ucho udev udoh udoo uh-d uhde uhoh uhuh uocc uovo uuoc uuuu uv-c uvvu vche vdcc vdec vecc vech vedc vede vedo veho veoh veve vevo vhhh voce vode vodo voeu voho vohu vooc voud voue vouh vuco vudu vvvv