a-be aaaa aaab aaac aaae aaal aaar aaba aabb aabc aabl aaca aacb aacc aace aacl aaco aacr aacu aaea aaec aala aalc aale aall aalo aalu aaoe aaoo aara aarc aare aaro aaru abaa abab abac abae abal abar abau abb- abba abbb abbe abbo abbr abca abcb abcc abcl abcr abec abee abel aber abla able ablo aboa abob abol aboo abor abou abra abrc abro abua abue abul acaa acab acac acae acar acba acbl acca accc acce acco accu ace- acea acec acel acer acla aclc acle aclr aclu acoa acoe acol acor acou acr- acra acrc acre acro acrr acu- acue acul acuo acur aeac aecb aecl aeer aela aelc aer- aera aerc aero alaa alac alae alal alao alar alau alb- alba albc albe albo albu alca alcc alce alco alea alec alee aleo aler aleu all- alla alle alll allo allr allu aloa aloc aloe alol aloo alor alou alro alua alur aoba aoca aoce aoeu aola aole aora aorb aoul arab arac arae aral arar arau arba arbe arc- arca arce arco area arec aree arel areo areu arla arle arlo aroa arob aroe aroo aror arr- arra arrc arre arro arrr arru arua arub arue arul auaa aube auca auce auel auer aul- aula aule aull aulo aulu auol aur- aura aure auro baaa baal baar baba babb babe babo babr babu bac- baca bacc bace baco bael baer bala balc bale ball balo balu baol bar- bara barb barc bare baro barr baru bau- baul baur bbau bbbb bbeb bblb bbrc bcaa bcar bcbc bcca bccc bccl bcec bcer bcor bcra bcru bcuc beal bear beau beba bebb bebe bebo beca becu beeb beel beer bela bele bell belo belu beo- beor bera berc bere bero berr beru beur blaa blab blac blae blau blcu blea bleb blee bleo bleu blob bloc bloo blou blrc blub blue blur boab boac boal boar boba bobb bobe bobo bobu boca boce boco bocu boea boec boee boel boeo boer bola bole boll bolo bolu boob booc booe bool boor bor- bora bore boro borr boru boua boue boul bour brab brac brae brao brau brca brcb brce brea breb brec bree brel breo brer broa brob broc broe brol broo bror brou brrr bruc brue bual buar buba bubb bube bubo bubu buca bucc buce buco bucu buea buel buer bueu bula bulb bule bull bulu buol bur- bura burb bure burl buro burr buru c-bo caaa caab caac caal caba cabe cabo cabu cac- caca cacc cace caco cacr caec caer caeu cala calc cale call calo calu caol caor cara carb carc care carl caro carr cauc caul cauo cbac cbal cbar cbbc cbca cbcc cbce cbcl cbcr cbcu cbea cbec cbee cber cblb cblc cbol cbre cbrl ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccl cccu ccee ccel ccla cclc ccob ccoc ccra ccrc ccre ccrl ccuc ceac ceal cear ceba cebu cec- ceca cece ceco ceeb ceec ceel cel- cela celc cele cell celo ceol ceor ceou cer- cera cerc cere cerl cero clab clar clau clea clec clee cleo cler cleu clob cloe cloo clor clou clra clro club clue coal coba cobb cobe cobo cobu coca coce coco cocu coel col- cola colb cole coll colo colu coob cool cor- cora corb corc core corl coro corr coua coub coue coul cour crab crac crar crau crbc crbu crca crcc crce crcr cre- crea creb crec cree creo creu crob croc croe crol croo cror crub crue cuau cub- cuba cubb cube cuca cucc cuce cuer cula culb culc cule cull culo cura curb cure curl curo curr e-cl e-la eaba eaca eacc eaec eala ealc eale eara earb eare earl earo ebac ebal ebba ebbc ebbo ebbr ebcc ebel eber ebla eboe ebol eboo ebor ebro ebru ebul ebur ecaa ecac ecal ecao ecar ecbc ecbe ecca eccb eccc ecce eccl ecco ecla eco- ecol ecou ecra ecrc ecrl ecrr ecru ecua eeca eeea eeee eele eeoc eera eerc eero el-b elab elac elal elar elba elbe elbo elbu elca elcb elce elco elea elec elee eleo eler ella elle ello ellu elra elro elue elul eola eole eolo eora eore eorl eral erau erba erbb erbe erca ercc erce ereb erec erel erer erla erle erll erob eroc eroe erol eroo erra errc erre erro erua erub eruc erur euba eubc euer eula eule eur- eura eurc eure euro laaa laac laal laar laba labe labo labr labu laca lacc lace lacl laco lacu lael laer lala lale lall lalo lalu laou lara larb larc lare larr laru laub laue laul laur lbar lbcc lblr lcac lcbc lcca lccc lcce lcer lcor lcra lcrl le-u leaa leal leao lear leau leba lebo lebu leca lece leco leea leel leer lela lele lell lelo lelu leoc leor leou lera lerc lere lero leuc leur llao llcc lleu lllc llll lloa lloc lloo loac loar lob- loba lobb lobe lobo loca locc loce loco locu loeb loeu lola lole loll lolo loob looc looe lool loor lora lore loro loue loul lour louu lrac lral lrba lroc lrrc lrrr luau luba lube luca luce luer lula lule lull lulu lura lure luua o-eo oaau oaer oall oara oare obal obba obbo obea obec obel ober obla oble oblu oboe obol obor obra obre obro ocab ocac ocal ocbc occa occc oce ocee oclc ocra ocre ocrl ocro ocrr ocul ocur oec- oeca oecc oeec oela oele oera oere olac olar olba olbo olca olcc ole- olea oleo oler olla olle ollo olor olur ooaa ooba oobe oocr ooer oola oolo oooo oora oore orab orac orae oral orao orar orba orbb orbe orbo orbu orca orce orco ore- orea oreb orec orel oreo orer orla orle orlo orlu oro- oroe oror orra orro orub ouac oucc ouea ouer oula oule oulu our- oura oure ouro ouu- raab raba rabb rabe rabl rabo rabu rac-