a-fu aaaa aaab aaac aaaf aaal aaam aaar aaba aabb aabc aabl aabm aaca aacb aacc aacf aacl aacm aacr aacu aafa aafb aafc aaff aafl aala aalc aall aalu aama aamb aamc aamr aara aarc aarm aaru abaa abab abac abaf abal abam abar abau abb- abba abbb abbr abca abcb abcc abcf abcl abcr abff abla abma abmb abmc abra abrc abua abuf abul abum acaa acab acac acar acba acbl acca accc accf accm accu acfc acfl acfm acla aclc aclr aclu acma acmc acmf acmu acr- acra acrc acrm acrr acu- acuf acul acum acur afaa afam afar afca afcb afcc afcu affa affc afla aflc afma afmc afr- afra afrc afrm afru afua alaa alac alal alam alar alau alb- alba albc albm albu alca alcc alfa all- alla alll allr allu alma almc almu alua aluf alum alur amaa amac amal amam amar amb- amba ambr ambu amca amcc amfm amfr amla amm- amma ammu amra amrc amrl amua amul amum amur arab arac araf aral aram arar arau arba arc- arca arcm arfa arfb arfc arff arfu arla arma armc arml armm armu arr- arra arrc arrr arru arua arub arul arum auaa auca aufc aul- aula aulf aull aulu auma aur- aura baaa baaf baal baam baar baba babb babm babr babu bac- baca bacc bafc baff bala balc balf ball balm balu bama bamb bamc bamf baml bamm bamu bar- bara barb barc barf barm barr baru bau- bauf baul baum baur bbau bbbb bbcm bbfc bblb bbrc bcaa bcam bcar bcbc bcca bccc bccl bccm bcfc bcfm bcma bcra bcru bcuc bfca bffl blaa blab blac blam blau blcu blfc blrc blub bluf blum blur bmaa bmfc brab brac braf bram brau brca brcb brfc brfm brfu brmc brrm brrr bruc brum bual buar buba bubb bubu buca bucc bucu bufc buff bufr bula bulb bull bulu bum- buma bumb bumf bur- bura burb burl burm burr buru caaa caab caac caaf caal caam caba cabf cabu cac- caca cacc cacm cacr cafa cafb cafc caff cafl cafu cala calc calf call calm calu cama camb camc caml camm cara carb carc carf carl carm carr cauc cauf caul caum cbac cbal cbar cbbc cbca cbcc cbcl cbcm cbcr cbcu cbfb cbfc cblb cblc cbrl cbrm ccaa ccab ccac ccaf ccam ccar ccba ccbc ccca cccb cccc cccf cccl cccm cccu ccfa ccfc ccff ccfl ccla cclc cclm ccma ccmb ccmc ccmm ccra ccrc ccrf ccrl ccuc cfaa cfab cfac cfam cfar cfbc cfbr cfca cfcb cfcf cfcl cfcm cffb cffr cfma cfmb cfml cfmu cfra cfrb clab claf clam clar clau clra club clum cmaa cmac cmba cmbc cmcc cmfb cmla cmll cmmb cmmc cmml cmra cmrr crab crac craf cram crar crau crbc crbu crca crcc crcr crfc crfl crlf crmb crub crum cuau cub- cuba cubb cuca cucc cucm cufa cufc cuff cula culb culc cull culm cum- cuma cura curb curf curl curr faaa faac faam faba fabm fabu faca facc fafa fafc faff fala falc fall falm falu fama fara farb farc farl farm farr faru faul faur fbar fbla fcab fcal fcar fcba fcca fccf fcmr fcra ffar ffcc ffff ffrr flab flac flam flcl flmb flub fluf flum flur fmca frab frac fram frau frbc frcc frfc frla frub frum fuar fubb fubu fuc- fuca fucm fufc fuff fufu fula full fulu fumc fur- fura furl furm furr laaa laac laal laam laar laba labr labu laca lacc lacl lacu lafb lafc laff lala lall lalm lalu lama lamb lamm lamr lamu lara larb larc larf larm larr laru laub lauf laul laur lbar lbcc lblr lbmc lcac lcbc lcca lccc lccm lcfc lcfr lcra lcrl lfca lfcc lfmr llcc lllc llll lmcc lmfm lmmr lrac lral lram lrba lrfc lrmc lrrc lrrr luau luba luca luff lufu lula lull lulu luma lumb lumc lura luua maaa maac maaf maal maam maar maba mabu mac- maca macb macc macr macu mafa mafb mafc maff mafu mal- mala mall malm malu mama mamc mamf mamu mar- mara marc marf marl marm marr maru maua mauf maul maum maur mbac mbam mbba mbca mcaa mcac mcba mcbc mcca mccc mccl mcfa mcfc mcla mcmc mcml mcrc mfbm mfcc mffa mlab mlba mlcc mmaa mmab mmac mmar mmcc mmcl mmcm mmff mmmc mmmm mmrc mmrf mr-c mrac mrbb mrbm mrca mrcb mrcc mrfc mrmc mrml mrrc muac muar muc- mucc mucu mufc muff mufu mula mull mulm mulu muma mumm mumu mura murc murl murr muru raab raaf raam raba rabb rabl rabu rac- raca racc racu rafa rafc raff rala ralb ralf rall rama ramb raml ramm ramu rara rarb rarf raua raub rauc rauf raul raum rbaf rbbb rbbr rbcl rcac rcaf rcbc rccb rccc rcfc rfam rffc rffl rlab rlml rlua rmaf rmll rrfc rrmc rrrr rrum ruba rubb rubu ruca rufa rufc ruff rula rull ruma rumb ruml rumm rura rurc ruru uabc uaca uafa uamc uarc uaru uaua ubac ubal ubar ubba ubla ubra ucal ucam ucar ucbc ucca ucfa ucfb ucla ucmc ucrc ucua ufcu uffa ufra ulaa ulam ular ulbc ulcc ulla ullr ulma ulmu ulua ulul ulum umaa umac umar umb- umba umff umla umma umra urac ural urau urba urca urfa urff urla urma urra urum urur uulu uuuu