-al -er a-a a-b a-c aaa aab aac aae aal aar aau ab- aba abb abc abe abl abr abu ac- aca acb acc ace acl acr acu aea aeb aec aee ael aer aeu al- ala alb alc ale all alr alu ar- ara arb arc are arl arr aru au- aua aub auc aue aul aur b-u baa bab bac bae bal bar bau bba bbb bbc bbe bbl bbr bbu bca bcb bcc bce bcl bcr bcu be- bea beb bec bee bel ber beu bla blb blc ble bll blr blu bra brb bre brl brr bru bua bub buc bue bul bur buu c-- caa cab cac cae cal car cau cba cbb cbc cbe cbl cbr cbu cca ccb ccc cce ccl ccr ccu ce- cea ceb cec cee cel cer ceu cl- cla clb clc cle cll clr clu cra crb crc cre crl crr cru cua cub cuc cue cul cur cuu eaa eab eac eae eal ear eau eba ebb ebc ebe ebl ebr ebu ec- eca ecb ecc ece ecl ecr ecu eea eeb eec eee eel eer ela elb elc ele ell elr elu era erb erc ere erl err eru eu- eua eub euc eue eul eur la- laa lab lac lae lal lar lau lba lbb lbc lbe lbl lbr lbu lca lcb lcc lce lcl lcr lcu lea leb lec lee lel ler leu lla llb llc lle lll llr llu lra lrb lrc lrr lru lua lub luc lue lul lur luu ra- raa rab rac rae ral rar rau rba rbb rbc rbe rbl rbr rbu rca rcb rcc rce rcl rcr rcu re- rea reb rec ree rel rer reu rla rlc rle rll rlr rlu rra rrb rrc rrl rrr rru rua rub ruc rue rur ruu ua- uaa uab uac uae ual uar uau uba ubb ubc ube ubl ubr ubu uca ucb ucc uce ucl ucr ucu uea ueb uec uee uel uer ula ulb ulc ule ull ulr ulu ur- ura urb urc ure url urr uru uua uuc uue uur uuu

a-be aaaa aaab aaac aaae aaal aaar aaba aabb aabc aabl aaca aacb aacc aace aacl aacr aacu aaea aaec aala aalc aale aall aalu aara aarc aare aaru abaa abab abac abae abal abar abau abb- abba abbb abbe abbr abca abcb abcc abcl abcr abec abee abel aber abla able abra abrc abua abue abul acaa acab acac acae acar acba acbl acca accc acce accu ace- acea acec acel acer acla aclc acle aclr aclu acr- acra acrc acre acrr acu- acue acul acur aeac aecb aecl aeer aela aelc aer- aera aerc alaa alac alae alal alar alau alb- alba albc albe albu alca alcc alce alea alec alee aler aleu all- alla alle alll allr allu alua alur arab arac arae aral arar arau arba arbe arc- arca arce area arec aree arel areu arla arle arr- arra arrc arre arrr arru arua arub arue arul auaa aube auca auce auel auer aul- aula aule aull aulu aur- aura aure baaa baal baar baba babb babe babr babu bac- baca bacc bace bael baer bala balc bale ball balu bar- bara barb barc bare barr baru bau- baul baur bbau bbbb bbeb bblb bbrc bcaa bcar bcbc bcca bccc bccl bcec bcer bcra bcru bcuc beal bear beau beba bebb bebe beca becu beeb beel beer bela bele bell belu bera berc bere berr beru beur blaa blab blac blae blau blcu blea bleb blee bleu blrc blub blue blur brab brac brae brau brca brcb brce brea breb brec bree brel brer brrr bruc brue bual buar buba bubb bube bubu buca bucc buce bucu buea buel buer bueu bula bulb bule bull bulu bur- bura burb bure burl burr buru caaa caab caac caal caba cabe cabu cac- caca cacc cace cacr caec caer caeu cala calc cale call calu cara carb carc care carl carr cauc caul cbac cbal cbar cbbc cbca cbcc cbce cbcl cbcr cbcu cbea cbec cbee cber cblb cblc cbre cbrl ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccl cccu ccee ccel ccla cclc ccra ccrc ccre ccrl ccuc ceac ceal cear ceba cebu cec- ceca cece ceeb ceec ceel cel- cela celc cele cell cer- cera cerc cere cerl clab clar clau clea clec clee cler cleu clra club clue crab crac crar crau crbc crbu crca crcc crce crcr cre- crea creb crec cree creu crub crue cuau cub- cuba cubb cube cuca cucc cuce cuer cula culb culc cule cull cura curb cure curl curr e-cl e-la eaba eaca eacc eaec eala ealc eale eara earb eare earl ebac ebal ebba ebbc ebbr ebcc ebel eber ebla ebru ebul ebur ecaa ecac ecal ecar ecbc ecbe ecca eccb eccc ecce eccl ecla ecra ecrc ecrl ecrr ecru ecua eeca eeea eeee eele eera eerc el-b elab elac elal elar elba elbe elbu elca elcb elce elea elec elee eler ella elle ellu elra elue elul eral erau erba erbb erbe erca ercc erce ereb erec erel erer erla erle erll erra errc erre erua erub eruc erur euba eubc euer eula eule eur- eura eurc eure laaa laac laal laar laba labe labr labu laca lacc lace lacl lacu lael laer lala lale lall lalu lara larb larc lare larr laru laub laue laul laur lbar lbcc lblr lcac lcbc lcca lccc lcce lcer lcra lcrl le-u leaa leal lear leau leba lebu leca lece leea leel leer lela lele lell lelu lera lerc lere leuc leur llcc lleu lllc llll lrac lral lrba lrrc lrrr luau luba lube luca luce luer lula lule lull lulu lura lure luua raab raba rabb rabe rabl rabu rac- raca racc race racu raec rael raer rala ralb rale rall rara rarb rare raua raub rauc raue raul rbbb rbbr rbcl rble rcac rcbc rccb rccc rcle rea- reac reae real rear reau