a-be a-fu aaaa aaab aaac aaae aaaf aaam aaar aaba aabb aabc aabm aaca aacb aacc aace aacf aacm aacr aacu aaea aaec aaem aafa aafb aafc aaff aama aamb aamc aame aamr aara aarc aare aarm aaru abaa abab abac abae abaf abam abar abau abb- abba abbb abbe abbr abca abcb abcc abcf abcr abec abee aber abff abma abmb abmc abra abrc abua abue abuf abum acaa acab acac acae acar acba acca accc acce accf accm accu ace- acea acec acem acer acfc acfe acfm acma acmc acme acmf acmu acr- acra acrc acre acrm acrr acu- acue acuf acum acur aeac aeaf aecb aeer aer- aera aerc afaa afam afar afca afcb afcc afcu afee afer affa affc afma afmc afr- afra afrc afre afrm afru afua afue amaa amac amae amam amar amb- amba ambe ambr ambu amca amcc amec amee amer ameu amfm amfr amm- amma amme ammu amra amrc amua amum amur arab arac arae araf aram arar arau arba arbe arc- arca arce arcm area arec aree aref arem areu arfa arfb arfc arff arfu arma armc arme armm armu arr- arra arrc arre arrr arru arua arub arue arum auaa aube auca auce auer aufc aufe auma aur- aura aure baaa baaf baam baar baba babb babe babm babr babu bac- baca bacc bace baer bafc baff bama bamb bamc bame bamf bamm bamu bar- bara barb barc bare barf barm barr baru bau- bauf baum baur bbau bbbb bbcm bbeb bbfc bbrc bcaa bcam bcar bcbc bcca bccc bccm bcec bcer bcfc bcfm bcma bcra bcru bcuc beaf beam bear beau beba bebb bebe beca becu beeb beef beem beer befa befe beff bema beme bemu bera berc bere berm berr beru beur bfca bfme bmaa bmce bmfc brab brac brae braf bram brau brca brcb brce brea breb brec bree bref brem brer brfc brfm brfu brmc brrm brrr bruc brue brum buar buba bubb bube bubu buca bucc buce bucu buea buem buer bueu bufc bufe buff bufr bum- buma bumb bumf bur- bura burb bure burm burr buru caaa caab caac caaf caam caba cabe cabf cabu cac- caca cacc cace cacm cacr caec caem caer caeu cafa cafb cafc cafe caff cafu cama camb camc came camm cara carb carc care carf carm carr cauc cauf caum cbac cbar cbbc cbca cbcc cbce cbcm cbcr cbcu cbea cbec cbee cbef cber cbfb cbfc cbme cbre cbrm ccaa ccab ccac ccaf ccam ccar ccba ccbc ccca cccb cccc cccf cccm cccu ccee ccfa ccfc ccff ccma ccmb ccmc ccmm ccra ccrc ccre ccrf ccuc ceac cear ceba cebu cec- ceca cece cecm ceeb ceec ceem cef- cefa cefc cema cemb ceme cemm cemr cemu cer- cera cerc cere cerf cfaa cfab cfac cfae cfam cfar cfbc cfbr cfca cfcb cfcf cfcm cffb cffr cfma cfmb cfmu cfra cfrb cfre cmaa cmac cmba cmbc cmcc cmea cmec cmfb cmmb cmmc cmra cmrr crab crac craf cram crar crau crbc crbu crca crcc crce crcr cre- crea creb crec cree crem creu crfc crmb crub crue crum cuau cub- cuba cubb cube cuca cucc cuce cucm cuer cufa cufc cuff cum- cuma cume cura curb cure curf curr eaaf eaba eaca eacc eaec eafb eama eame eara earb eare ebac ebam ebba ebbc ebbr ebcc eber ebfc ebru ebur ecaa ecac ecam ecar ecbc ecbe ecca eccb eccc ecce eccm ecef ecem ecfa ecfc ecfr ecma ecra ecrc ecrf ecrm ecrr ecru ecua eeca eeea eeee eefa eefe eera eerc efab efbr efca effa efma efua emac emae emam emar emba embe embr emcc emcf emer emeu emma emme emmu emra emre eraf eram erau erba erbb erbe erca ercc erce ereb erec erem erer erfc erma ermc erme erra errc erre erua erub eruc erum erur euba eubc euer eufc eumc eur- eura eurc eure faaa faac faam faba fabe fabm fabu faca facc face faeb faem fafa fafc fafe faff fama fame fara farb farc fare farm farr faru faue faur fbar fcab fcar fcba fcca fccf fcmr fcra feaf feam fear feba fece feeb feem feer fefc fefe feff fema femb feme femm fera ferb ferc fere ferm ferr feru ffar ffcc ffee ffff ffrr fmca fmea frab frac frae fram frau frbc frcc frea free frem frfc frub frue frum fuar fubb fubu fuc- fuca fucm fufc fuff fufu fumc fume fur- fura fure furm furr maaa maac maaf maam maar maba mabe mabu mac- maca macb macc mace macr macu maee maem maer mafa mafb mafc maff mafu mama mamc mame mamf mamu mar- mara marc mare marf marm marr maru maua mauf maum maur mbac mbam mbba mbca mcaa mcac mcba mcbc mcca mccc mcef mcfa mcfc mcmc mcrc mear mebe mec- meca mecc mece mecr meef meem meer mefe meff mema memc meme memr memu mer- mera merb merc mere merf merm meru meum mfbm mfcc mffa mmaa mmab mmac mmar mmcc mmcm mmea mmff mmmc mmmm mmrc mmrf mr-c mrac mrbb mrbm mrca mrcb mrcc mrce mreb mree mrfc mrmc mrrc muac muar mube muc- mucc muce mucu muee mufc muff mufu muma mume mumm mumu mura murc mure murr muru raab raaf raam raba rabb rabe rabu rac- raca racc race racu raec raef raer rafa rafc rafe raff rama ramb rame ramm ramu rara rarb rare rarf raua raub rauc raue rauf raum rbaf rbbb rbbr rcac rcaf rcbc rccb rccc rcfc rea- reac reae reaf ream rear reau reba rebb rebe rebu reca recc rece recm recr recu reeb reef reem refe reff refr refu rema reme rera rere reru reue reuf reuu rfae rfam rfef rfem rffc rmaf rrfc rrmc rrrr rrum ruba rubb rube rubu ruca ruce ruer rufa rufc rufe ruff ruma rumb rume rumm rura rurc rure ruru uabc uaca uafa uamc uarc uaru uaua ubac ubar ubba ubbe uber ubra ucam ucar ucbc ucca ucea ucfa ucfb ucmc ucrc ucua ueba uefa