-al a-a a-b a-c aaa aab aac aad aae aak aal aau ab- aba abb abc abd abe abk abl abu ac- aca acb acc acd ace ack acl acu ad- ada adb adc add ade adk adl adu aea aeb aec aed aee aek ael aeu aka akb akc akd ake akk akl aku al- ala alb alc ald ale alk all alu au- aua aub auc aud aue auk aul b-u baa bab bac bad bae bak bal bau bba bbb bbc bbd bbe bbk bbl bbu bca bcb bcc bcd bce bck bcl bcu bda bdb bdc bdd bde bdk bdl bdu be- bea beb bec bed bee bek bel beu bka bkb bkc bke bkk bkl bla blb blc bld ble blk bll blu bua bub buc bud bue buk bul buu c-- caa cab cac cad cae cak cal cau cba cbb cbc cbd cbe cbk cbl cbu cca ccb ccc ccd cce cck ccl ccu cda cdb cdc cdd cde cdk cdl cdu ce- cea ceb cec ced cee cek cel ceu cka ckb ckc ckd cl- cla clb clc cld cle clk cll clu cua cub cuc cud cue cuk cul cuu daa dab dac dad dae dak dal dau dba dbb dbc dbd dbe dbk dbl dbu dca dcb dcc dcd dce dck dcl dcu dda ddb ddc ddd dde ddk ddl ddu de- dea deb dec ded dee dek del deu dka dkb dkc dke dkk dkl dku dl- dla dlb dlc dld dle dlk dll dlu dua dub duc dud due duk dul eaa eab eac ead eae eak eal eau eba ebb ebc ebd ebe ebk ebl ebu ec- eca ecb ecc ecd ece eck ecl ecu ed- eda edb edc edd ede edk edl edu eea eeb eec eed eee eek eel eka ekb ekc ekd eke ekl eku ela elb elc eld ele elk ell elu eu- eua eub euc eud eue eul ka- kaa kab kac kad kae kak kal kau kba kbb kbc kbd kbe kbk kbl kbu kca kcb kcc kcd kce kck kcl kcu kda kdb kdc kde kdk kdl kdu ke- kea keb kec ked kee kek kel kkb kkc kke kkk kkl kku kl- kla klb klc kld klu kub kuc kud kue kuk kul kuu la- laa lab lac lad lae lak lal lau lba lbb lbc lbd lbe lbk lbl lbu lca lcb lcc lcd lce lck lcl lcu lda ldb ldc ldd lde ldk ldl ldu lea leb lec led lee lek lel leu lka lkb lkl lla llb llc lld lle llk lll llu lua lub luc lud lue luk lul luu ua- uaa uab uac uad uae uak ual uau uba ubb ubc ube ubk ubl ubu uca ucb ucc ucd uce uck ucl ucu uda udb udc udd ude udk udl udu uea ueb uec ued uee uel uka ukb ukc uke ukk ukl uku ula ulb ulc uld ule ulk ull ulu uua uuc uue uuu

a-ak a-be aaaa aaab aaac aaad aaae aaal aaba aabb aabc aabd aabl aaca aacb aacc aacd aace aack aacl aacu aada aadc aade aadu aaea aaec aaka aake aaku aala aalc aald aale aall aalu abaa abab abac abad abae abak abal abau abb- abba abbb abbe abca abcb abcc abcd abcl abda abdu abec abed abee abel abla able abua abud abue abuk abul acaa acab acac acad acae acba acbl acca accc accd acce accu acda acdb acdc acde ace- acea acec aced acek acel ackd acke acla aclc acle aclu acu- acue acul adaa adab adac adad adae adak adal adba adbc adcc adda addc addd adde addl addu adea adeb adee adel adle adua adub adue aduk aeac aecb aecl aede aeka aela aelc akaa akae akal akca aked akee akel akeu akka akku akle akua alaa alac alad alae alak alal alau alb- alba albc albe albu alca alcc alce ald- alda alde aldl alea alec aled alee alek aleu alk- alka alkb alkd alke alku all- alla alle alll allu alua aluk auaa aube auca auce audc aude auel auke aul- aula auld aule aull aulu baaa baad baak baal baba babb babe babu bac- baca bacc bace back bada badb badd bade badu baed baek bael bak- baka bake bakl baku bala balc bald bale balk ball balu bau- baud bauk baul bbad bbau bbbb bbdd bbeb bblb bcaa bcbc bcca bccc bccl bcda bcde bcec bcuc bdbc bddc bdle bead beak beal beau beba bebb bebe beca beck becu beda bede bedl bedu beeb beed beek beel beka beke bela beld bele belk bell belu beuk blaa blab blac blad blae blak blau blcu bldc blea bleb bled blee blek bleu blkb blkd blub blud blue buad bual buba bubb bube bubu buca bucc buce buck bucu buda budb budd bude budl budu buea buel bueu buka buke bukk buku bula bulb buld bule bulk bull bulu c-cd caaa caab caac caal caba cabe cabu cac- caca cacc cace cack cada cadc cadd cade cadu caec caeu caka cake cala calc cald cale calk call calu cauc cauk caul cbac cbal cbbc cbca cbcc cbce cbcl cbcu cbdb cbdc cbea cbec cbee cbka cbkl 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 ceke cel- cela celc cele cell ckac ckbc ckbe ckck ckcl ckdu clab clad clau clcd cldc clea clec cled clee clek cleu club clud clue cuau cub- cuba cubb cube cuca cucc cuce cuck cuda cude cued cuek cuk- cuka cuke cula culb culc culd cule culk cull daab daad daae daal daau daba dabb dabu daca dace dada dade dadu daeb daeu daka dake daku dala dale dalk dall dalu daub daud daue dauk dbcc dcbc dcca dccb dccc