a-do a-ha aaaa aaac aaad aaae aaah aaca aacc aacd aace aach aaco aada aadc aade aaea aaec aaha aaoe aaoo acaa acac acad acae acca accc accd acce acch acco acda acdc acde ace- acea acec aced aceh acha ache achh acho acoa acod acoe acoh adaa adac adad adae adah adao adcc adda addc addd adde addo adea adee adeh adeo adha adhd adho adoc adod adoe adoo aeac aede ahac ahad ahah ahed ahha ahoa ahod ahoe aoah aoca aoce aodh c-cd caaa caac caah cac- caca cacc cace cach caco cada cadc cadd cade cado caec caha cahe caod ccaa ccac ccad ccca cccc ccdc ccdh cced ccee ccha cche ccoc ccod cd-e cdaa cdac cdad cdda cdec ceac cead cec- ceca cece ceco ceda cedd cede cedo ceec chaa chac chad chae chah chao chca chce chch chea chec ched chee cheh chha choc chod choh choo coad coca coce coch coco coda codd code coed coha coho cood cooh daad daae daca dace dada dade dado daha dahe dcca dccc dche dddd ddoc deac dead deae dec- deca decc decd dece deco deda dedd dede dedo deed deha dhaa dhad dhao dhec dhed dhee dhod doae doca doce doch doco dod- doda dodd dode dodo doea doha dohc dood eaca eacc each eada eadd eaec ecaa ecac ecad ecao ecca eccc ecce ecco ecdc eced echa eche echo eco- ecod edac edad edah edca edda eddc edde eddo ede- edea edeh edoc edod eeca eede eeea eeee eeoc ehaa ehcc ehdd ehea eheh eocd eode haad hace haco hada hade hadh haec haed haha haho hcca hccc hcch hdca hdda hdoc hdod head heah heca hech heda hedd hede hedo heed hehe heho hhaa hhhh hoac hoad hoca hoce hoch hoda hode hodh hoed hoha hohe hoho hood hooe o-eo oade oahe ocac ocad occa occc oce oced ocee ocha oche odac odah odda oddd odea oded odeo odoh odoo oec- oeca oecc oedo oeec ohad ohcc ohed ohee ohho ohoh ooaa ooda ooha ooho oooh oooo