a-a a-b a-c aaa aab aac aag aaj aak aan aao aar aas aau ab- aba abb abc abg abj abk abn abo abr abs abu ac- aca acb acc acg acj ack acn aco acr acs acu ag- aga agb agc agg agj agk agn ago agr ags agu aja ajb ajc ajj ajk ajn ajo ajr ajs aju aka akb akc akg akj akk akn ako akr aks aku an- ana anb anc ang anj ank ann ano anr ans anu aoa aob aoc aog aoj aok aon aoo aor aos aou ar- ara arb arc arg arj ark arn aro arr ars aru as- asa asb asc asg asj ask asn aso asr ass asu au- aua aub auc aug auj auk aun auo aur aus b-u baa bab bac bag baj bak ban bao bar bas bau bba bbb bbc bbg bbk bbn bbo bbr bbs bbu bca bcb bcc bcg bcj bck bcn bco bcr bcs bcu bga bgb bgc bgg bgk bgn bgo bgr bgs bgu bja bjc bjg bjj bjk bjn bjr bjs bju bka bkb bkc bkg bkk bkn bko bkr bks bna bnb bnc bng bnj bnk bnn bno bnr bns bnu boa bob boc bog boj bok bon boo bor bos bou bra brb brg brj brk brn bro brr brs bru bsa bsb bsc bsg bsj bsk bsn bso bsr bss bsu bua bub buc bug buj buk bun buo bur bus buu c-- c-j caa cab cac cag caj cak can cao car cas cau cba cbb cbc cbg cbj cbk cbn cbo cbr cbs cbu cca ccb ccc ccg ccj cck ccn cco ccr ccs ccu cga cgb cgc cgg cgn cgo cgr cgs cgu cja cjb cjc cjg cjk cjr cjs cka ckb ckc cko cks cn- cna cnb cnc cng cnj cnn cno cnr cns cnu co- coa cob coc cog coj cok con coo cor cos cou cra crb crc crg crj crk crn cro crr crs cru csa csb csc csg csj csk csn cso csr css csu cua cub cuc cug cuk cun cuo cur cus cuu gaa gab gac gag gaj gak gan gao gar gas gau gba gbc gbg gbj gbk gbn gbo gbr gbs gbu gca gcb gcc gcg gck gcn gco gcr gcs gcu gga ggb ggc ggg ggj ggn ggo ggr ggs ggu gja gjc gjg gjr gka gkb gkn gko gks gna gnb gnc gnn gno gnr gns gnu goa gob goc gog gok gon goo gor gos gou gra grb grc grg grj grk grn gro grr grs gru gsa gsb gsc gsg gsj gsk gsn gso gsr gss gsu gu- gua gub guc gug guj guk gun guo gur gus guu jaa jab jac jag jaj jak jan jao jar jas jau jba jbc jbg jbj jbk jbo jbr jbs jbu jca jcb jcc jck jco jcr jcs jcu jga jgb jgn jgo jgr jgs jgu jja jjb jjc jjg jjj jjk jjr jjs jju jka jkb jkk jkn jko jkr jks jku jna jnc jng jnj jnn jno jnr jns jnu joa job joc jog joj jok jon joo jor jos jou jra jrb jrc jrg jrk jrn jro jrr jrs jsa jsb jsc jsg jsj jsk jsn jso jsr jss jsu jub jug juk jun juo jur jus ka- kaa kab kac kag kaj kak kan kao kar kas kau kba kbb kbc kbk kbn kbo kbr kbs kbu kca kcb kcc kcg kck kcn kcr kcs kcu kga kgb kgc kgo kgs kgu kjb kjc kjr kjs kju kkb kkc kkk kkn kkr kks kku kn- kna knc kng knk knn kno knr knu koa kob koc kog kok kon koo kor kos kou kra krc krg krk krn kro krr krs kru ksa ksb ksc ksg ksk ksn kso ksr kss ksu kub kuc kug kuj kuk kun kur kus kuu naa nab nac nag naj nak nan nao nar nas nau nba nbb nbc nbg nbk nbn nbo nbr nbs nbu nca ncb ncc ncg nck ncn nco ncr ncs ncu nga ngb ngc ngg ngj ngk ngn ngo ngs ngu nja njc njk njn njs nju nka nkc nkj nkk nkn nko nkr nks nku nna nnb nnc nng nnk nnn nno nns nnu no- noa nob noc nog noj nok non noo nor nos nou nra nrb nrc nrg nrj nrk nrn nro nrr nrs nru nsa nsb nsc nsg nsk nsn nso nsr nss nsu nua nub nuc nug nuj nuk nun nuo nur nus nuu oaa oab oac oag oaj oak oan oao oar oas oau ob- oba obb obc obg obj obk obn obo obr obs obu oc- oca ocb occ ocg ocj ock ocn oco ocr ocs ocu oga ogc ogg ogn ogo ogs oja ojb ojc ojo ojs oju oka okb okc okg okj okk oko okr oks oku on- ona onb onc ong onj onk onn ono onr ons onu oo- ooa oob ooc oog ook oon ooo oor oos or- ora orb orc org ork orn oro orr ors oru os- osa osb osc osg osj osk osn oso osr oss osu ou- oua ouc ouk oun ouo our ous ra- raa rab rac rag raj rak ran rao rar ras rau rba rbb rbc rbg rbk rbn rbo rbr rbs rbu rca rcb rcc rcg rcj rcn rco rcr rcs rcu rga rgb rgc rgg rgk rgn rgo rgr rgs rja rjc rjg rjk rjr rkb rkc rkg rkk rko rks rku rna rnb rnc rng rnn rno rnr rns rnu roa rob roc rog roj rok ron roo ror ros rou rra rrb rrc rrg rrk rrn rrr rrs rru rsa rsb rsc rsg rsj rsk rsn rso rsr rss rsu rua rub ruc rug ruk run ruo rur rus ruu saa sab sac sag saj sak san sao sar sas sau sba sbb sbc sbg sbj sbk sbn sbo sbr sbs sbu sca scb scc scg scj