-ase a-be a-fu aaaa aaab aaae aaaf aaar aaas aaba aabb aaea aaes aafa aafb aaff aara aare aars aaru aasa aase aasf aass aasu aaus abaa abab abae abaf abar abas abau abb- abba abbb abbe abbr abbs abee aber abes abff abra abrs abs- absa abse absf abss absu abua abue abuf abus aeaf aeas aebs aeer aer- aera aers aess afaa afar afbs afee afer afes affa affs afr- afra afre afrs afru afsa afsb afua afue afus arab arae araf arar aras arau arba arbe arbs area aree aref ares areu arfa arfb arff arfs arfu arr- arra arre arrr arrs arru ars- arsa arse arsu arua arub arue asaa asab asae asaf asar asas asau asba asbu asea asee aser ases asfa asra asrs asru assa asse assr asss assu asub asue asur asus auaa aube auer aufe aufs aur- aura aure ausa ause ausu baaa baaf baar baas baba babb babe babr babs babu baer baes baff bar- bara barb bare barf barr bars baru basa base basf bass basu bau- bauf baur bbas bbau bbbb bbbs bbeb beaf bear beas beau beba bebb bebe beeb beef beer bees befa befe beff bera bere berr bers beru bes- besa bese bess beur bfas bffs bfsr brab brae braf bras brau brea breb bree bref brer bres brfu brrr brrs brsb brsr brue brus bsaa bsas bsea bseb bsee bser bses bsfa bsff bsfs bsra bsse buar buba bubb bube bubs bubu buea buer bueu bufe buff bufr bur- bura burb bure burr burs buru busa buse buss busu buus eaaf eaba eafb eara earb eare ears easa ease eaus ebba ebbr ebbs eber ebes ebru ebsa ebur ebus eeea eeee eees eefa eefe eera eers eese efab efas efbr efes effa effs efsa efua eraf eras erau erba erbb erbe ereb erer eres erfs erra erre errs ersa erse erua erub erur erus esab esar esas esau esba esbs esea esee eser eses esfs esra essa esse essu esuf esus euba euer eur- eura eure eusa euse faaa faas faba fabe fabs fabu faeb faes fafa fafe faff fara farb fare farr fars faru fasa fase fass faue faur fbar fbrs fbus feaf fear feas feba febs feeb feer fees fefe feff fera ferb fere ferr fers feru fesa fese fess feus ffar ffee ffff ffrr ffsa ffss frab frae fras frau frea free fres frsb frub frue fsas fsra fssa fssf fuar fubb fubs fubu fuff fufu fur- fura fure furr furs fusa fuse fuss fusu raab raaf raas raba rabb rabe rabs rabu raef raer raes rafa rafe raff rara rarb rare rarf rars rasa rase rass rasu raua raub raue rauf raus rbaf rbbb rbbr rbbs rbss rea- reae reaf rear reas reau reba rebb rebe rebs rebu reeb reef rees refe reff refr refs refu rera rere rers reru resa rese ress reue reuf reus reuu rfae rfef rras rrrr rsaa rsaf rsee rsre rssa rsua ruas ruba rubb rube rubs rubu ruer rues rufa rufe ruff rura rure rurs ruru rusa ruse russ rusu saab saae saaf saar saas saba sabb sabe sabr sabs sabu saeb saer saes safa safb safe saff safr safu sara sare sarf sarr sars saru sasa sase sasf sass saua saue sauf saur saus sbaa sbar sbas sbbs sbef sber sbsa sbse sbus se-e se-f se-s se-u seaa seab seaf sear seas seau seba sebe sebs seea seeb seef seer sees seeu sefa seff sera serb sere serf serr sers seru sesa sese sess seur sfar sfas sfba sfer sfra sfss sfsu sraf sras sreb sres srub ssaa ssab ssas ssau ssbr ssee sses ssra ssrs sssa sssb sssf ssss suar suas sub- suba subb subs suee suer sues sueu suf- sufa suff sufr sufs sufu sur- sura sure surf surr surs suru sus- susa suse suss susu suus uaes uafa uars uaru uasa uaua ubar ubba ubbe uber ubra ueba uefa uers uess ufer uffa uffe ufra uras urau urba urbe urbs ure- urea ures urfa urfe urff urra urre ursa urse urss ursu urur urus us-a usaa usaf usar usas usba usbe usbr usbs usea usee usef user uses usfa usfs usra ussa ussb usse ussf ussr usss ussu usua usus uuuu