-al a-a a-b a-c aaa aab aac aal aan aar aau ab- aba abb abc abl abn abr abu ac- aca acb acc acl acn acr acu al- ala alb alc all aln alr alu an- ana anb anc anl ann anr anu ar- ara arb arc arl arn arr aru au- aua aub auc aul aun aur b-u baa bab bac bal ban bar bau bba bbb bbc bbl bbn bbr bbu bca bcb bcc bcl bcn bcr bcu bla blb blc bll bln blr blu bna bnb bnc bnl bnn bnr bnu bra brb brl brn brr bru bua bub buc bul bun bur buu c-- caa cab cac cal can car cau cba cbb cbc cbl cbn cbr cbu cca ccb ccc ccl ccn ccr ccu cl- cla clb clc cll cln clr clu cn- cna cnb cnc cnl cnn cnr cnu cra crb crc crl crn crr cru cua cub cuc cul cun cur cuu la- laa lab lac lal lan lar lau lba lbb lbc lbl lbr lbu lca lcb lcc lcl lcn lcr lcu lla llb llc lll lln llr llu lna lnb lnc lnl lnn lnr lnu lra lrb lrc lrn lrr lru lua lub luc lul lun lur luu naa nab nac nal nan nar nau nba nbb nbc nbl nbn nbr nbu nca ncb ncc ncl ncn ncr ncu nla nlb nlc nll nln nlr nlu nna nnb nnc nnl nnn nnu nra nrb nrc nrl nrn nrr nru nua nub nuc nul nun nur nuu ra- raa rab rac ral ran rar rau rba rbb rbc rbl rbn rbr rbu rca rcb rcc rcl rcn rcr rcu rla rlc rll rln rlr rlu rna rnb rnc rnn rnr rnu rra rrb rrc rrl rrn rrr rru rua rub ruc run rur ruu ua- uaa uab uac ual uan uar uau uba ubb ubc ubl ubn ubr ubu uca ucb ucc ucl ucn ucr ucu ula ulb ulc ull uln ulr ulu un- una unb unc unl unn unr unu ur- ura urb urc url urn urr uru uua uuc uun uur uuu

-ana a-un aaaa aaab aaac aaal aaan aaar aaba aabb aabc aabl aaca aacb aacc aacl aacn aacr aacu aala aalc aall aalu aana aara aarc aaru abaa abab abac abal aban abar abau abb- abba abbb abbr abca abcb abcc abcl abcn abcr abla abnu abra abrc abua abul abun acaa acab acac acan acar acba acbl acca accc accu acla aclc aclr aclu acr- acra acrc acrr acu- acul acur alaa alac alal alan alar alau alb- alba albc albu alca alcc all- alla alll alln allr allu alna alua alun alur ana- anaa anab anac anal anan anar anau anba anbb anbl anbu anca ancc anla anlc anln anlu anna annb anrc anua anub anul anun arab arac aral aran arar arau arba arc- arca arla arna arr- arra arrc arrr arru arua arub arul arun auaa auca aul- aula aull auln aulu auna aur- aura baaa baal baan baar baba babb babr babu bac- baca bacc bacn bala balc ball balu bana banc bann banr banu bar- bara barb barc barn barr baru bau- baul baur bbau bbbb bblb bbrc bcaa bcar bcbc bcca bccc bccl bcnu bcra bcru bcuc blaa blab blac blan blau blcu blrc blub blur bnrr brab brac bran brau brca brcb brna brrr bruc brun bual buar buba bubb bubu buca bucc bucu bula bulb bull bulu buna bunb bunn bunu bur- bura burb burl burn burr buru caaa caab caac caal caan caba cabu cac- caca cacc cacr cala calc call calu cana canc cann cara carb carc carl carn carr cauc caul cbac cbal cbar cbbc cbca cbcc cbcl cbcn cbcr cbcu cblb cblc cbln cbna cbrl cbrn ccaa ccab ccac ccar ccba ccbc ccbn ccca cccb cccc cccl cccu ccla cclc ccna ccnb ccnc ccnr ccnu ccra ccrc ccrl ccuc clab clan clar clau clra club clun cnaa cnac cnbc cnbl cnna cnrc cnrr crab crac cran crar crau crbc crbu crca crcc crcr crna crub crun cuan cuau cub- cuba cubb cuca cucc cucn cula culb culc cull cuna cura curb curl curn curr laaa laac laal laan laar laba labr labu laca lacc lacl lacu lala lall lalu lan- lana lanc lann lanu lara larb larc larn larr laru laub laul laun laur lbar lbcc lblr lcac lcbc lcca lccc lcra lcrl llan llcc lllc llll lncr lrac lral lrba lrrc lrrr luan luau luba luca lula lull lulu luna lunn lura luua naaa naab naac naal naan naar naba nabc nabl nabu naca nacc nacl nala nalc nall nalu nan- nana nanb nann nanu nara narc narn narr naru naul naur nbaa nbar nbbc nbca nbcc ncaa ncac ncar ncba ncbc ncca nccc nccn nccr nccu nclc ncln nclr ncna ncnc ncra ncrc ncua nlab nlcc nlra nlrb nnnn nrab nrca nrlb nrna nrrc nrrl nuan nuba nubc nubl nuca nucu null nuna nunc nunn nura nurc nurl nurn nurr nuru raab raan raba rabb rabl rabu rac- raca racc racu rala ralb rall rana ranc rann rara rarb raua raub rauc raul raun rbbb rbbr rbcl rcac rcbc rccb rccc rcnl rcnr rlab rlua rnal rnbr rrna rrrr rrun ruan ruba rubb rubu ruca rula rull runa runc runn rura rurc ruru ruun uabc uaca uarc uaru uaua ubac ubal ubar ubba ubla ubra ucal ucan ucar ucbc ucca ucla ucrc ucua ulaa ulan ular ulbc ulcc ulla ullr ulna ulua ulul unaa unac unal unan unar unau unca uncc uncl unna unra urac ural uran urau urba urca urla urna urra urun urur uulu uuuu

-aaa- aaarc aabaa aabba aabra aacbc aarau aarna abaab ababa ababu abaca abala aball abana abanc abann abara abarn abaru abbac abban abbar abbur abcan abccc ablun ablur abnub abrac abran abrar abrun abula abull abuna abura aburn aburr acaca acacb acala acall acana acar- acara acaua accra accub accur aclla aclub acrab acral acuba acula