a-a a-b a-c aaa aab aac aad aag aak aan aao aar aas aau ab- aba abb abc abd abg abk abn abo abr abs abu ac- aca acb acc acd acg ack acn aco acr acs acu ad- ada adb adc add adg adk adn ado adr ads adu ag- aga agb agc agd agg agk agn ago agr ags agu aka akb akc akd akg akk akn ako akr aks aku an- ana anb anc and ang ank ann ano anr ans anu aoa aob aoc aod aog aok aon aoo aor aos aou ar- ara arb arc ard arg ark arn aro arr ars aru as- asa asb asc asd asg ask asn aso asr ass asu au- aua aub auc aud aug auk aun auo aur aus b-u baa bab bac bad bag bak ban bao bar bas bau bba bbb bbc bbd bbg bbk bbn bbo bbr bbs bbu bca bcb bcc bcd bcg bck bcn bco bcr bcs bcu bda bdb bdc bdd bdg bdk bdo bdr bds bdu bga bgb bgc bgd bgg bgk bgn bgo bgr bgs bgu bka bkb bkc bkg bkk bkn bko bkr bks bna bnb bnc bnd bng bnk bnn bno bnr bns bnu boa bob boc bod bog bok bon boo bor bos bou bra brb brd brg brk brn bro brr brs bru bsa bsb bsc bsd bsg bsk bsn bso bsr bss bsu bua bub buc bud bug buk bun buo bur bus buu c-- caa cab cac cad cag cak can cao car cas cau cba cbb cbc cbd cbg cbk cbn cbo cbr cbs cbu cca ccb ccc ccd ccg cck ccn cco ccr ccs ccu cda cdb cdc cdd cdg cdk cdn cdo cdr cds cdu cga cgb cgc cgd cgg cgn cgo cgr cgs cgu cka ckb ckc ckd cko cks cn- cna cnb cnc cnd cng cnn cno cnr cns cnu co- coa cob coc cod cog cok con coo cor cos cou cra crb crc crd crg crk crn cro crr crs cru csa csb csc csd csg csk csn cso csr css csu cua cub cuc cud cug cuk cun cuo cur cus cuu daa dab dac dad dag dak dan dao dar das dau dba dbb dbc dbd dbg dbk dbn dbo dbr dbs dbu dca dcb dcc dcd dcg dck dcn dco dcr dcs dcu dda ddb ddc ddd ddg ddk ddn ddo ddr dds ddu dga dgc dgd dgg dgk dgn dgr dgs dgu dka dkb dkc dkg dkk dko dkr dks dku dna dnb dnc dnd dng dnk dnn dno dnr dns doa dob doc dod dog dok don doo dor dos dou dra drb drc drd drg drk drn dro drr drs dru dsa dsb dsc dsd dsg dsk dsn dso dsr dss dsu dua dub duc dud dug duk dun duo dur dus g-d gaa gab gac gad gag gak gan gao gar gas gau gba gbc gbd gbg gbk gbn gbo gbr gbs gbu gca gcb gcc gcd gcg gck gcn gco gcr gcs gcu gda gdb gdc gdd gdk gdn gdo gdr gds gdu gga ggb ggc ggd ggg ggn ggo ggr ggs ggu gka gkb gkd gkn gko gks gna gnb gnc gnd gnn gno gnr gns gnu goa gob goc god gog gok gon goo gor gos gou gra grb grc grd grg grk grn gro grr grs gru gsa gsb gsc gsd gsg gsk gsn gso gsr gss gsu gu- gua gub guc gud gug guk gun guo gur gus guu ka- kaa kab kac kad kag kak kan kao kar kas kau kba kbb kbc kbd kbk kbn kbo kbr kbs kbu kca kcb kcc kcd kcg kck kcn kcr kcs kcu kda kdb kdc kdg kdk kdo kdr kds kdu kga kgb kgc kgd kgo kgs kgu kkb kkc kkk kkn kkr kks kku kn- kna knc knd kng knk knn kno knr knu koa kob koc kod kog kok kon koo kor kos kou kra krc krd krg krk krn kro krr krs kru ksa ksb ksc ksd ksg ksk ksn kso ksr kss ksu kub kuc kud kug kuk kun kur kus kuu naa nab nac nad nag nak nan nao nar nas nau nba nbb nbc nbd nbg nbk nbn nbo nbr nbs nbu nca ncb ncc ncd ncg nck ncn nco ncr ncs ncu nda ndb ndc ndd ndg ndk ndn ndo ndr nds ndu nga ngb ngc ngd ngg ngk ngn ngo ngs ngu nka nkc nkk nkn nko nkr nks nku nna nnb nnc nng nnk nnn nno nns nnu no- noa nob noc nod nog nok non noo nor nos nou nra nrb nrc nrd nrg nrk nrn nro nrr nrs nru nsa nsb nsc nsd nsg nsk nsn nso nsr nss nsu nua nub nuc nud nug nuk nun nuo nur nus nuu oaa oab oac oad oag oak oan oao oar oas oau ob- oba obb obc obd obg obk obn obo obr obs obu oc- oca ocb occ ocd ocg ock ocn oco ocr ocs ocu oda odb odc odd odg odn odo odr ods odu oga ogc ogd ogg ogn ogo ogs oka okb okc okd okg okk oko okr oks oku on- ona onb onc ond ong onk onn ono onr ons onu oo- ooa oob ooc ood oog ook oon ooo oor oos or- ora orb orc ord org ork orn oro orr ors oru os- osa osb osc osd osg osk osn oso osr oss osu ou- oua ouc oud ouk oun ouo our ous ra- raa rab rac rad rag rak ran rao rar ras rau rba rbb rbc rbd rbg rbk rbn rbo rbr rbs rbu rca rcb rcc rcd rcg rcn rco rcr rcs rcu rda rdb rdc rdd rdg rdn rdo rdr rds rdu rga rgb rgc rgd rgg rgk rgn rgo rgr rgs rkb rkc rkg rkk rko rks rku rna rnb rnc rnd rng rnn