a-be a-ha aaaa aaab aaac aaad aaae aaah aaba aabb aabc aabd aabh aaca aacb aacc aacd aace aach aacu aada aadc aade aadu aaea aaec aaha abaa abab abac abad abae abau abb- abba abbb abbe abca abcb abcc abcd abch abda abdu abec abed abee abha abua abud abue acaa acab acac acad acae acba acca accc accd acce acch accu acda acdb acdc acde ace- acea acec aced aceh acha ache achh achu acu- acue adaa adab adac adad adae adah adba adbc adcc adda addc addd adde addu adea adeb adee adeh adha adhd adhu adua adub adue aeac aecb aede ahab ahac ahad ahah ahau ahed ahha ahua auaa aube auca auce auch audc aude audh baaa baad baah baba babb babe babu bac- baca bacc bace bach bada badb badd bade badh badu baed baha bahu bau- baud bbad bbau bbbb bbch bbdd bbeb bcaa bcbc bcca bccc bcda bcde bcec bchd bche bcuc bdbc bddc bddh bead beah beau beba bebb bebe beca bech becu beda bede bedu beeb beed bhca bhcc bhuu buad buba bubb bube bubu buca bucc buce buch bucu buda budb budd bude budu buea bueu buha buhe c-cd caaa caab caac caah caba cabe cabu cac- caca cacc cace cach cada cadc cadd cade cadu caec caeu caha cahe cauc cbac cbbc cbca cbcc cbce cbcu cbdb cbdc cbea cbec cbee cbha ccaa ccab ccac ccad ccba ccbc ccca cccb cccc cccu ccdc ccdh cced ccee ccha cche ccuc cd-e cdaa cdac cdad cdba cdda cddb cdec ceac cead ceba cebu cec- ceca cece ceda cedd cede cedu ceeb ceec chaa chab chac chad chae chah chau chca chce chch chea cheb chec ched chee cheh cheu chha chua chub chud cuau cub- cuba cubb cube cuca cucc cuce cuda cude cued daab daad daae daau daba dabb dabu daca dace dada dade dadu daeb daeu daha dahe dahu daub daud daue dbcc dcbc dcca dccb dccc dccu dcdb dche dddd ddub deac dead deae deau deba debe debu dec- deca decc decd dece deda dedd dede dedu deeb deed deha dehu deua deue dhaa dhad dhau dhec dhed dhee duaa duab duad duah dub- duba dubb dubc dube dubh dubu duca duce duch duda dudd dude dudu duha duhe duhu eaba eabh eaca eacc each eada eadb eadd eaec ebac ebba ebbc ebcc ebed ecaa ecac ecad ecbc ecbe ecca eccb eccc ecce ecdc eced echa eche ecua edac edad edah edca edda eddc edde ede- edea edeh educ eeca eede eedu eeea eeee ehaa ehcc ehdd ehea eheh eheu ehud euba eubc eucd euch eude haab haad haba habe habu hace hada hade hadh hadu haec haed haha hau- haud haue hbcd hcbc hcca hccb hccc hcch hdca hdda head heah hebb hebe heca hech heda hedd hede heeb heed hehe heue hhaa hhhh huac huah huba hubb hube huch hucu huda hudd hude hudu huea hued huhu huub uabc uaca uaua ubac ubba ubbe ubud ucad ucbc ucca ucdc ucdd ucea ucha uche ucua udaa udad udau udbc udca udea ueba ueda uh-d uhde uhuh uuuu