-al a-a a-b a-c aaa aab aac aag aal aar aau ab- aba abb abc abg abl abr abu ac- aca acb acc acg acl acr acu ag- aga agb agc agg agl agr agu al- ala alb alc alg all alr alu ar- ara arb arc arg arl arr aru au- aua aub auc aug aul aur b-u baa bab bac bag bal bar bau bba bbb bbc bbg bbl bbr bbu bca bcb bcc bcg bcl bcr bcu bga bgb bgc bgg bgl bgr bgu bla blb blc blg bll blr blu bra brb brg brl brr bru bua bub buc bug bul bur buu c-- caa cab cac cag cal car cau cba cbb cbc cbg cbl cbr cbu cca ccb ccc ccg ccl ccr ccu cga cgb cgc cgg cgl cgr cgu cl- cla clb clc clg cll clr clu cra crb crc crg crl crr cru cua cub cuc cug cul cur cuu gaa gab gac gag gal gar gau gba gbc gbg gbl gbr gbu gca gcb gcc gcg gcl gcr gcu gga ggb ggc ggg ggr ggu gla glb glc glg gll glr glu gra grb grc grg grl grr gru gu- gua gub guc gug gul gur guu la- laa lab lac lag lal lar lau lba lbb lbc lbg lbl lbr lbu lca lcb lcc lcg lcl lcr lcu lga lgb lgc lgg lgl lgr lgu lla llb llc llg lll llr llu lra lrb lrc lrg lrr lru lua lub luc lug lul lur luu ra- raa rab rac rag ral rar rau rba rbb rbc rbg rbl rbr rbu rca rcb rcc rcg rcl rcr rcu rga rgb rgc rgg rgr rla rlc rlg rll rlr rlu rra rrb rrc rrg rrl rrr rru rua rub ruc rug rur ruu ua- uaa uab uac uag ual uar uau uba ubb ubc ubg ubl ubr ubu uca ucb ucc ucg ucl ucr ucu uga ugb ugc ugg ugl ugr ugu ula ulb ulc ulg ull ulr ulu ur- ura urb urc urg url urr uru uua uuc uug uur uuu

aaaa aaab aaac aaal aaar aaba aabb aabc aabl aaca aacb aacc aacl aacr aacu aala aalc aall aalu aara aarc aaru abaa abab abac abag abal abar abau abb- abba abbb abbr abca abcb abcc abcl abcr abgl abla abra abrc abua abug abul acaa acab acac acag acar acba acbl acca accc accu acga acgr acla aclc aclr aclu acr- acra acrc acrr acu- acul acur agac agag agal agar agau agba agca agcc agga aggu agla aglc aglu agra agrl agua agul agur alaa alac alag alal alar alau alb- alba albc albu alca alcc alg- alga all- alla alll allr allu alua alug alur arab arac arag aral arar arau arba arc- arca arga argb arla arr- arra arrc arrg arrr arru arua arub arug arul auaa auca auga aul- aula aull aulu aur- aura auug baaa baal baar baba babb babr babu bac- baca bacc baga bagg bala balc ball balu bar- bara barb barc barg barr baru bau- baug baul baur bbau bbbb bbga bblb bbrc bbrg bcaa bcar bcbc bcbg bcca bccc bccl bcra bcru bcuc bgca blaa blab blac blag blau blcu blrc blrg blub blur brab brac brag brau brca brcb brrr bruc brug bual buar buba bubb bubu buca bucc bucu buga bugg bula bulb bulg bull bulu bur- bura burb burg burl burr buru caaa caab caac caal caba cabg cabu cac- caca cacc cacr caga cagg cagr cala calc call calu cara carb carc carl carr cauc caul cbac cbal cbar cbbc cbca cbcc cbcl cbcr cbcu cbga cbgb cblb cblc cbrl ccaa ccab ccac ccag ccar ccba ccbc ccca cccb cccc cccl cccu ccga ccgc ccla cclc cclg ccra ccrc ccrg ccrl ccuc cgac cgal cgcc cgcg clab clag clar clau clra club crab crac crag crar crau crbc crbu crca crcc crcr crub crug cuau cub- cuba cubb cuca cucc cuga cula culb culc cull cura curb curl curr gaal gaar gaba gabb gabl gabr gabu gaga gagg gagu gala gall galu gara garb garg garr gaua gaub gaul gaur gbag gc-c gcaa gcal gcbc gccc gclc gcrg ggcl gggg glaa glab glar glau glbc glcc glrb glub glug glur grab grac grau grbr grcc grrl grrr grua grub grug grur guaa guac guag guar guba gubb gubu guca guga gugb gugg gugu gula gulb gull gulu gura gurb gurg gurl gurr guru laaa laac laag laal laar laba labr labu laca lacc lacl lacu lag- laga lagg lagu lala lall lalu lara larb larc larg larr laru laub laul laur lbar lbcc lblr lbug lcac lcbc lcca lccc lcra lcrg lcrl lgbu lgca llcc llgc lllc llll lrac lral lrba lrgb lrrc lrrr luau luba luca luga lugg lugu lula lull lulu lura lurg luua raab raag raba rabb rabl rabu rac- raca racc racu raga ragg ragu rala ralb rall rara rarb raua raub rauc raul rbbb rbbr rbcl rcac rcbc rccb rccc rcga rcgc rcrg rgba rlab rlcg rlua rlug rrrr ruag ruba rubb rubu ruca ruga rugg rula rull rura rurc ruru uabc uaca uarc uaru uaua ubac ubal ubar ubba ubla ubra ucal ucar ucbc ucca ucla ucrc ucua ugab ugal ugar ugcc ugcg ugra ugur uguu ulaa ular ulbc ulcc ulla ullr ulua ulul urac ural urau urba urca urga urgu urla urra urur uulu uuuu

-aaa- aaarc aaarg aabaa aabba aabga aabra aacbc aarau abaab ababa ababu abaca abaga abala aball abara abaru abbac abbar abbur abccc abgal abgar ablur abrac abrar abula abull abura aburr acaca acacb acala acall acar- acara acaua acccg accra accub accur aclla aclub acrab acral acuba acula acura agara aggag aggar aglal aglar agral aguar agula agulu agura alaba alaca alala alalu alara albac albal albar albul albur alcra algal algau algua allal allar allra alluc allur aluar aluga alula alull ar-ab ara-c arab- araba araca aralu arara araru araul arbab arbar argal