a-be aaaa aaab aaac aaad aaae aaal aaba aabb aabc aabd aabl aaca aacb aacc aacd aace aacl aacu aada aadc aade aadu aaea aaec aala aalc aald aale aall aalu abaa abab abac abad abae abal abau abb- abba abbb abbe abca abcb abcc abcd abcl abda abdu abec abed abee abel abla able abua abud abue abul acaa acab acac acad acae acba acbl acca accc accd acce accu acda acdb acdc acde ace- acea acec aced acel acla aclc acle aclu acu- acue acul adaa adab adac adad adae adal adba adbc adcc adda addc addd adde addl addu adea adeb adee adel adle adua adub adue aeac aecb aecl aede aela aelc alaa alac alad alae alal alau alb- alba albc albe albu alca alcc alce ald- alda alde aldl alea alec aled alee aleu all- alla alle alll allu alua auaa aube auca auce audc aude auel aul- aula auld aule aull aulu baaa baad baal baba babb babe babu bac- baca bacc bace bada badb badd bade badu baed bael bala balc bald bale ball balu bau- baud baul bbad bbau bbbb bbdd bbeb bblb bcaa bcbc bcca bccc bccl bcda bcde bcec bcuc bdbc bddc bdle bead beal beau beba bebb bebe beca becu beda bede bedl bedu beeb beed beel bela beld bele bell belu blaa blab blac blad blae blau blcu bldc blea bleb bled blee bleu blub blud blue buad bual buba bubb bube bubu buca bucc buce bucu buda budb budd bude budl budu buea buel bueu bula bulb buld bule bull bulu c-cd caaa caab caac caal caba cabe cabu cac- caca cacc cace cada cadc cadd cade cadu caec caeu cala calc cald cale call calu cauc caul cbac cbal cbbc cbca cbcc cbce cbcl cbcu cbdb cbdc cbea cbec cbee cblb cblc ccaa ccab ccac ccad ccba ccbc ccca cccb cccc cccl cccu ccdc cced ccee ccel ccla cclc ccuc cd-e cdaa cdac cdad cdba cdda cddb cddl cdec ceac cead ceal ceba cebu cec- ceca cece ceda cedd cede cedu ceeb ceec ceel cel- cela celc cele cell clab clad clau clcd cldc clea clec cled clee cleu club clud clue cuau cub- cuba cubb cube cuca cucc cuce cuda cude cued cula culb culc culd cule cull daab daad daae daal daau daba dabb dabu daca dace dada dade dadu daeb daeu dala dale dall dalu daub daud daue dbcc dcbc dcca dccb dccc dccl dccu dcdb dddd ddlc ddub deac dead deae deal deau deba debe debu dec- deca decc decd dece decl deda dedd dede dedu deeb deed deel dela deld dele dell deua deue deul dlab dlbd duaa duab duad dual dub- duba dubb dubc dube dubu duca duce duda dudd dude dudu duel dula dulc dule dull dulu duul e-cl e-la eaba eaca eacc eada eadb eadd eaec eala ealc eald eale ebac ebal ebba ebbc ebcc ebed ebel ebla ebul ecaa ecac ecad ecal ecbc ecbe ecca eccb eccc ecce eccl ecdc ecdl eced ecla ecua edac edad edca edda eddc edde ede- edea edel edla edle educ eeca eede eedu eeea eeee eele el-b elab elac elad elal elba elbe elbu elca elcb elce elda elde elea elec eled elee ella elle ellu elue elul euba eubc eucd eude eula eule laaa laac laad laal laba labe labu laca lacc lace lacl lacu lada ladd lade ladu lael lala lald lale lall lalu laub laud laue laul lbcc lcac lcad lcbc lcca lccc lcce lcdd le-u leaa lead leal leau leba lebd lebu leca lece leda lede leea leed leel lela lele lell lelu leuc leud llcc lldb lldc lleu lllc llll llud luau luba lube luca luce luda ludd lude lued lula lule lull lulu luua uabc uaca uald uaua ubac ubal ubba ubbe ubla uble ubud ucad ucal ucbc ucca ucdc ucdd ucea ucel ucla ucua udaa udad udal udau udbc udca udea udel ueba ueda uele uell ulaa ulad ulae ulbc ulcc ulde ulea uleb ulee ulla ulle ulua ulul uulu uuuu