a-a a-b a-c aaa aab aac aag aan aar aau ab- aba abb abc abg abn abr abu ac- aca acb acc acg acn acr acu ag- aga agb agc agg agn agr agu an- ana anb anc ang ann anr anu ar- ara arb arc arg arn arr aru au- aua aub auc aug aun aur b-u baa bab bac bag ban bar bau bba bbb bbc bbg bbn bbr bbu bca bcb bcc bcg bcn bcr bcu bga bgb bgc bgg bgn bgr bgu bna bnb bnc bng bnn bnr bnu bra brb brg brn brr bru bua bub buc bug bun bur buu c-- caa cab cac cag can car cau cba cbb cbc cbg cbn cbr cbu cca ccb ccc ccg ccn ccr ccu cga cgb cgc cgg cgn cgr cgu cn- cna cnb cnc cng cnn cnr cnu cra crb crc crg crn crr cru cua cub cuc cug cun cur cuu gaa gab gac gag gan gar gau gba gbc gbg gbn gbr gbu gca gcb gcc gcg gcn gcr gcu gga ggb ggc ggg ggn ggr ggu gna gnb gnc gnn gnr gnu gra grb grc grg grn grr gru gu- gua gub guc gug gun gur guu naa nab nac nag nan nar nau nba nbb nbc nbg nbn nbr nbu nca ncb ncc ncg ncn ncr ncu nga ngb ngc ngg ngn ngu nna nnb nnc nng nnn nnu nra nrb nrc nrg nrn nrr nru nua nub nuc nug nun nur nuu ra- raa rab rac rag ran rar rau rba rbb rbc rbg rbn rbr rbu rca rcb rcc rcg rcn rcr rcu rga rgb rgc rgg rgn rgr rna rnb rnc rng rnn rnr rnu rra rrb rrc rrg rrn rrr rru rua rub ruc rug run rur ruu ua- uaa uab uac uag uan uar uau uba ubb ubc ubg ubn ubr ubu uca ucb ucc ucg ucn ucr ucu uga ugb ugc ugg ugn ugr ugu un- una unb unc ung unn unr unu ur- ura urb urc urg urn urr uru uua uuc uug uun uur uuu

-ana a-un aaaa aaab aaac aaan aaar aaba aabb aabc aaca aacb aacc aacn aacr aacu aana aang aara aarc aaru abaa abab abac abag aban abar abau abb- abba abbb abbr abca abcb abcc abcn abcr abnu abra abrc abua abug abun acaa acab acac acag acan acar acba acca accc accu acga acgr acr- acra acrc acrr acu- acur agac agag agan agar agau agba agca agcc agga aggu agna agra agua agun agur ana- anaa anab anac anag anan anar anau anba anbb anbu anca ancc ang- anga angu anna annb anrc anua anub anun arab arac arag aran arar arau arba arc- arca arga argb arna arng arr- arra arrc arrg arrr arru arua arub arug arun auaa auca auga auna aung aur- aura auug baaa baan baar baba babb babr babu bac- baca bacc bacn baga bagg bagn bana banc bang bann banr banu bar- bara barb barc barg barn barr baru bau- baug baur bbau bbbb bbga bbng bbrc bbrg bcaa bcar bcbc bcbg bcca bccc bcnu bcra bcru bcuc bgan bgca bgun bnrr brab brac brag bran brau brca brcb brna brrr bruc brug brun buar buba bubb bubu buca bucc bucu buga bugg buna bunb bung bunn bunu bur- bura burb burg burn burr buru caaa caab caac caan caba cabg cabu cac- caca cacc cacr caga cagg cagn cagr cana canc cang cann cara carb carc carn carr cauc cbac cbar cbbc cbca cbcc cbcn cbcr cbcu cbga cbgb cbna cbrn ccaa ccab ccac ccag ccar ccba ccbc ccbn ccca cccb cccc cccu ccga ccgc ccna ccnb ccnc ccnr ccnu ccra ccrc ccrg ccuc cgac cgcc cgcg cnaa cnac cnag cnbc cnna cnrc cnrr crab crac crag cran crar crau crbc crbu crca crcc crcr crna crub crug crun cuan cuau cub- cuba cubb cuca cucc cucn cuga cuna cura curb curn curr gaar gaba gabb gabr gabu gaga gagg gagu gana ganc gang gann ganu gara garb garg garn garr gaua gaub gaun gaur gbag gban gc-c gcaa gcbc gccc gcna gcrg gggg ggrn gnaa gnac gnar gnau gncc gngc gnrc gnrr grab grac gran grau grbr grcc grrr grua grub grug grun grur guaa guac guag guan guar guba gubb gubu guca guga gugb gugg gugu guna gung gunn gura gurb gurg gurn gurr guru naaa naab naac naag naan naar naba nabc nabu naca nacc naga nagc nagu nan- nana nanb nang nann nanu nara narc narg narn narr naru naur nbaa nbar nbbc nbca nbcc ncaa ncac ncar ncba ncbc ncca nccc nccn nccr nccu ncga ncgr ncna ncnc ncra ncrc ncua ngab ngac ngan ngur nguu nngn nnnn nrab nrca nrna nrrc nuan nuba nubc nuca nucu nuna nunc nung nunn nura nurc nurn nurr nuru raab raag raan raba rabb rabu rac- raca racc racu raga ragg ragu rana ranc rang rann rara rarb raua raub rauc raun rbbb rbbr rcac rcbc rccb rccc rcga rcgc rcnr rcrg rgan rgba rnag rnbr rrna rrrr rrun ruag ruan ruba rubb rubu ruca ruga rugg runa runc rung runn rura rurc ruru ruun uabc uaca uang uarc uaru uaua ubac ubar ubba ubra ucan ucar ucbc ucca ucrc ucua ugab ugar ugcc ugcg ugra ugur uguu unaa unac unan unar unau unca uncc uncg unga ungu unna unra urac uran urau urba urca urga urgu urna urra urun urur uuuu

-aaa- aaarc aaarg aabaa aabba aabga aabra aacbc aarau aarna abaab ababa ababu abaca abaga abana abanc abang abann abara abarn abaru abbac abban abbar abbur abcan abccc abgar abgun abnub abrac abran abrar abrun abuna abura aburn aburr acaca acacb acana acang acar- acara acaua acccg accra accub accur acrab acuba acura agana agara agarn aggag aggar agnac agnar aguar aguna agung agura anaba anaga anana anang anara anaru anaua anaun anban anbar ancar angar angra angua annan annar anncr annua annur anuga anura