aaaa aaab aaac aaad aaal aaam aaba aabb aabc aabd aabl aabm aaca aacb aacc aacd aacl aacm aacu aada aadc aadu aala aalc aald aall aalu aama aamb aamc aamd abaa abab abac abad abal abam abau abb- abba abbb abca abcb abcc abcd abcl abda abdu abla abma abmb abmc abua abud abul abum acaa acab acac acad acba acbl acca accc accd accm accu acda acdb acdc acdm acla aclc aclu acma acmc acmu acu- acul acum adaa adab adac adad adal adam adba adbc adcc adda addc addd addl addu adma admb adml adua adub alaa alac alad alal alam alau alb- alba albc albm albu alca alcc ald- alda aldl aldm all- alla alll allu alma almc almu alua alum amaa amac amad amal amam amb- amba ambu amca amcc amda amla amm- amma ammu amua amud amul amum auaa auca audc aul- aula auld aull aulu auma baaa baad baal baam baba babb babm babu bac- baca bacc bada badb badd badu bala balc bald ball balm balu bama bamb bamc baml bamm bamu bau- baud baul baum bbad bbau bbbb bbcm bbdd bblb bcaa bcam bcbc bcca bccc bccl bccm bcda bcma bcuc bdbc bddc blaa blab blac blad blam blau blcu bldc blub blud blum bmaa bmdb buad bual buba bubb bubu buca bucc bucu buda budb budd budl budu bula bulb buld bull bulu bum- buma bumb c-cd caaa caab caac caal caam caba cabu cac- caca cacc cacm cada cadc cadd cadm cadu cala calc cald call calm calu cama camb camc caml camm cauc caul caum cbac cbal cbbc cbca cbcc cbcl cbcm cbcu cbdb cbdc cblb cblc ccaa ccab ccac ccad ccam ccba ccbc ccca cccb cccc cccl cccm cccu ccdc ccdm ccla cclc cclm ccma ccmb ccmc ccmd ccmm ccuc cdaa cdac cdad cdba cdda cddb cddl cdma clab clad clam clau clcd cldc clmd club clud clum cmaa cmac cmba cmbc cmcc cmda cmdb cmla cmll cmmb cmmc cmml cuau cub- cuba cubb cuca cucc cucm cuda cula culb culc culd cull culm cum- cuma daab daad daal daam daau daba dabb dabu daca dada dadu dala dall dalu dama damb daml damm damu daub daud daum dbcc dcbc dcca dccb dccc dccl dccu dcdb dcma dcml dcmu dddd ddlc ddub dlab dlbd dmaa dmab dmac dmba dmcc dmcm dmdc duaa duab duad dual dub- duba dubb dubc dubu duca duda dudd dudu dula dulc dull dulu duma dumb dumm duul laaa laac laad laal laam laba labu laca lacc lacl lacu lada ladd ladu lala lald lall lalm lalu lama lamb lamd lamm lamu laub laud laul lbcc lbmc lcac lcad lcbc lcca lccc lccm lcdd lddm llcc lldb lldc lllc llll llud lmcc luau luba luca luda ludd lula lull lulu luma lumb lumc luua maaa maac maad maal maam maba mabu mac- maca macb macc macd macu mada madb madc madd mal- mala mald mall malm malu mama mamc mamu maua maud maul maum mbac mbam mbba mbca mbda mbdb mcaa mcac mcad mcba mcbc mcca mccc mccd mccl mcdc mcdd mcdl mcla mcmc mcml mdac mdca mdcc mdcl mddl mddm mdma mdmc mdud mlab mlba mlcc mmaa mmab mmac mmcc mmcd mmcl mmcm mmda mmdb mmdc mmdl mmmc mmmd mmmm muac muc- mucc mucu muda mudd mudl mudu mula muld mull mulm mulu muma mumm mumu uabc uaca uald uamc uaua ubac ubal ubba ubla ubud ucad ucal ucam ucbc ucca ucdc ucdd ucla ucmc ucua udaa udad udal udau udbc udca udma udmc ulaa ulad ulam ulbc ulcc ulla ulma ulmu ulua ulul ulum umaa umac umb- umba umla umma uulu uuuu