-al a-a a-b a-c aaa aab aac aaf aal aan aau ab- aba abb abc abf abl abn abu ac- aca acb acc acf acl acn acu af- afa afb afc aff afl afn afu al- ala alb alc alf all aln alu an- ana anb anc anf anl ann anu au- aua aub auc auf aul aun b-u baa bab bac baf bal ban bau bba bbb bbc bbf bbl bbn bbu bca bcb bcc bcf bcl bcn bcu bfa bfb bfc bff bfl bfn bfu bla blb blc blf bll bln blu bna bnb bnc bnf bnl bnn bnu bua bub buc buf bul bun buu c-- caa cab cac caf cal can cau cba cbb cbc cbf cbl cbn cbu cca ccb ccc ccf ccl ccn ccu cfa cfb cfc cff cfl cfn cfu cl- cla clb clc clf cll cln clu cn- cna cnb cnc cnf cnl cnn cnu cua cub cuc cuf cul cun cuu faa fab fac faf fal fan fau fba fbb fbc fbf fbl fbn fbu fca fcb fcc fcf fcl fcn fcu ffa ffc fff ffl ffn ffu fla flb flc flf fll fln flu fna fnb fnc fnf fnl fnn fnu fua fub fuf ful fun fuu la- laa lab lac laf lal lan lau lba lbb lbc lbf lbl lbu lca lcb lcc lcf lcl lcn lcu lfa lfb lfc lff lfl lfn lfu lla llb llc llf lll lln llu lna lnb lnc lnl lnn lnu lua lub luc luf lul lun luu naa nab nac naf nal nan nau nba nbb nbc nbf nbl nbn nbu nca ncb ncc ncf ncl ncn ncu nfa nfb nfc nff nfl nfn nfu nla nlb nlc nlf nll nln nlu nna nnb nnc nnf nnl nnn nnu nua nub nuc nul nun nuu ua- uaa uab uac uaf ual uan uau uba ubb ubc ubf ubl ubn ubu uca ucb ucc ucf ucl ucn ucu ufa ufc uff ufl ufn ufu ula ulb ulc ulf ull uln ulu un- una unb unc unf unl unn unu uua uuc uun uuu

-ana a-fu a-un aaaa aaab aaac aaaf aaal aaan aaba aabb aabc aabl aaca aacb aacc aacf aacl aacn aacu aafa aafb aafc aaff aafl aala aalc aall aalu aana abaa abab abac abaf abal aban abau abb- abba abbb abca abcb abcc abcf abcl abcn abff abla abnu abua abuf abul abun acaa acab acac acan acba acbl acca accc accf accu acfc acfl acla aclc aclu acu- acuf acul afaa afan afca afcb afcc afcu affa affc afla aflc afua alaa alac alal alan alau alb- alba albc albu alca alcc alfa all- alla alll alln allu alna alua aluf alun ana- anaa anab anac anal anan anau anba anbb anbl anbu anca ancc anfa anla anlc anln anlu anna annb anua anub anuf anul anun auaa auca aufc aul- aula aulf aull auln aulu auna baaa baaf baal baan baba babb babu bac- baca bacc bacn bafc baff bala balc balf ball balu bana banc bann banu bau- bauf baul bbau bbbb bbfc bbfn bblb bcaa bcbc bcca bccc bccl bcfc bcnu bcuc bfca bffl blaa blab blac blan blau blcu blfc blub bluf bual buba bubb bubu buca bucc bucu bufc buff bula bulb bull bulu buna bunb bunn bunu caaa caab caac caaf caal caan caba cabf cabu cac- caca cacc cafa cafb cafc caff cafl cafu cala calc calf call calu cana canc cann cauc cauf caul cbac cbal cbbc cbca cbcc cbcl cbcn cbcu cbfb cbfc cblb cblc cbln cbna ccaa ccab ccac ccaf ccba ccbc ccbn ccca cccb cccc cccf cccl cccu ccfa ccfc ccff ccfl ccla cclc ccna ccnb ccnc ccnf ccnu ccuc cfaa cfab cfac cfbc cfbn cfca cfcb cfcf cfcl cfcn cffb cfln cfnb cfun clab claf clan clau club clun cnaa cnac cnbc cnbl cnfa cnna cuan cuau cub- cuba cubb cuca cucc cucn cufa cufc cuff cula culb culc cull cuna faaa faac faan faba fabu faca facc fafa fafc faff fala falc fall faln falu fana fanc fanu faul faun fbla fcab fcal fcba fcca fccf fcnl ffcc ffff ffun flab flac flan flcl flna flnb flnc flub fluf fnac fnlc fnuf fubb fubu fuc- fuca fufc fuff fufu fula full fulu funa funf laaa laac laal laan laba labu laca lacc lacl lacu lafb lafc laff lala lall lalu lan- lana lanc lann lanu laub lauf laul laun lbcc lcac lcbc lcca lccc lcfc lfca lfcc llan llcc lllc llll luan luau luba luca luff lufu lula lull lulu luna lunn luua naaa naab naac naal naan naba nabc nabf nabl nabu naca nacc nacf nacl nafa nafc naff nafl nala nalc nall nalu nan- nana nanb nann nanu naul nbaa nbaf nbbc nbca nbcc nbfa nbfc nbfl nbuf ncaa ncac ncba ncbc ncca nccc nccf nccn nccu ncfc nclc ncln ncna ncnc ncua nfaa nfcu nfff nlab nlcc nlcf nnnn nuan nuba nubc nubl nuca nucu nuff null nuna nunc nunn uabc uaca uafa uaua ubac ubal ubba ubla ucal ucan ucbc ucca ucfa ucfb ucla ucua ufcu uffa ulaa ulan ulbc ulcc ulla ulna ulua ulul unaa unac unal unan unau unca uncc uncf uncl unlf unna uulu uuuu

-aaa- aabaa aabba aacbc abaab ababa ababu abaca abala aball abana abanc abann abbac abban abcan abccc abfab ablun abnub abula abull abuna acaca acacb acala acalf acall acana acaua accub acfun aclla aclub acnff acuba acuff acula afall afanc afaun afful aflac afnan afula afull alaba alaca alala alalu alana alaun albac albal alban albul alcan alfan allaf allal allan alluc alula alull aluna alunu anaba anala anana anaua anaun anban annal annan annua annul anula auala aubun aucan aucun aulan aulla auln- aunac aunc- baalc baalu baban babau babul bacab bacca bacu bacul bacun bafan baffa bafna balac balal balan balca balla balun banaf banal banan banau banba banca banfa banff banfu banna bannu baula bball blaan blaca blacc blaff blanc blann