a-a a-b aaa aab aag aak aao aar aas ab- aba abb abg abk abo abr abs ag- aga agb agg agk ago agr ags aka akb akg akk ako akr aks aoa aob aog aok aoo aor aos ar- ara arb arg ark aro arr ars as- asa asb asg ask aso asr ass baa bab bag bak bao bar bas bba bbb bbg bbk bbo bbr bbs bga bgb bgg bgk bgo bgr bgs bka bkb bkg bkk bko bkr bks boa bob bog bok boo bor bos bra brb brg brk bro brr brs bsa bsb bsg bsk bso bsr bss gaa gab gag gak gao gar gas gba gbg gbk gbo gbr gbs gga ggb ggg ggo ggr ggs gka gkb gko gks goa gob gog gok goo gor gos gra grb grg grk gro grr grs gsa gsb gsg gsk gso gsr gss ka- kaa kab kag kak kao kar kas kba kbb kbk kbo kbr kbs kga kgb kgo kgs kkb kkk kkr kks koa kob kog kok koo kor kos kra krg krk kro krr krs ksa ksb ksg ksk kso ksr kss oaa oab oag oak oao oar oas ob- oba obb obg obk obo obr obs oga ogg ogo ogs oka okb okg okk oko okr oks oo- ooa oob oog ook ooo oor oos or- ora orb org ork oro orr ors os- osa osb osg osk oso osr oss ra- raa rab rag rak rao rar ras rba rbb rbg rbk rbo rbr rbs rga rgb rgg rgk rgo rgr rgs rkb rkg rkk rko rks roa rob rog rok roo ror ros rra rrb rrg rrk rrr rrs rsa rsb rsg rsk rso rsr rss saa sab sag sak sao sar sas sba sbb sbg sbk sbo sbr sbs sga sgb sgg sgk sgo sgr sgs sk- ska skb skg skk sko skr sks soa sob sog sok soo sor sos sr- sra srb srg srk sro srr srs ss- ssa ssb ssg ssk sso ssr sss

a-ak a-ok aaaa aaab aaar aaas aaba aabb aaka aaoo aara aaro aars aasa aass abaa abab abag abak abar abas abb- abba abbb abbo abbr abbs aboa abob abok aboo abor abos abra abro abrs abs- absa abss ag-o agag agao agar agas agba agbo agga agob agog agoo agos agra agro agsa agsg akaa akao akar akas akka akko akok akos akr- akra aksa aoba aoks aora aorb aors aoss arab arag arak arar aras arba arbs arga argb argo args arka arko arks aroa arob aroo aror aros arr- arra arrg arrk arro arrr arrs ars- arsa arsk arso asaa asab asag asak asao asar asas asba asbo aska asko askr asks asob asog asok asor asos asra asrg asro asrs assa assk asso assr asss baaa baak baar baas baba babb babo babr babs baga bagg bago bags bak- baka bako bakr baks baos bar- bara barb barg bark baro barr bars basa bask baso bass bbas bbbb bbbs bbga bbrg bggs boab boag boak boar boas boba bobb bobo bobs boga bogg bogo bogs boka boko boks boob boog book boor boos bor- bora borg bork boro borr bors bosa bosk boso boss brab brag brak brao bras brka brkb broa brob brog brok broo bror bros brrr brrs brsb brsr bsaa bsas bsgs bsos bsra gaar gaas gaba gabb gabo gabr gabs gaga gagg gago gags gaos gara garb garg garo garr gars gasa gasb gask gaso gasr gass gbag gbas gbbo gbbs gggg ggss goar goas goba gobo gobs goga gogo gogs goog gook goor goos gora gorb gorg goro gorr gors goso goss grab gras grbr grob grog grok groo gror gros grrr grrs grss gsab gskb gsos k-os kaaa kaab kaag kaak kaar kaas kaba kabb kabg kabo kabr kag- kaga kagb kagg kago kagr kags kaka kakk kako kaks kaoa kaog kaok kaor kaos kara karb karg kark karo karr kars kas- kasa kasb kask kaso kasr kass kbaa kbab kbak kbar kbas kbba kbbb kbbg kbbk kbbo kbbr kbbs kbga kbgb kbgg kbgo kbgr kbkb kbkg kbkk kbko kbkr kboa kbob kbok kboo kbos kbra kbrb kbrg kbrk kbro kbsa kbsb kbsg kbsk kbso kbsr kbss kgab kgak kgas kgba kgbb kgbr kgga kggg kggo kggr kgks kgor kgos kgra kgrb kgrg kgrk kgro kgrr kgrs kgso kgsr kkaa kkag kkar kkba kkbb kkbg kkbo kkbr kkbs kkgb kkgo kkgr kkkk kkoa kkob kkoo kkor kkrb kkrk kkro kkrr kkrs kksa kksr kkss koab koak koar koas koba kobb kobk kobo kobr kobs koga kogb kogg kogo koka kokb kokk koko kokr koks koob koog kook kooo koor koos kora korb korg kork koro korr kors kos- kosa kosb kosg koso kosr koss krab krag krak krar kras krba krbb krbg krbk krbr krgs krka krkk krko krkr krks kroa krob krog krok kroo kror kros krrb krrg krrk krro krrr krrs krsa krsk krsr krss ksab ksak ksar ksas ksba ksbr ksbs ksgg ksgr kska kskb kskg kskk ksko kskr ksks ksob ksok ksoo ksor ksos ksra ksrb ksrg ksro ksrr ksrs kssa ksso kssr ksss oaks oara oars oass obak obas obba obbo obkb obok obor obos obra obro obsr obss ogar ogb ogba ogoa ogog ogra ogro okak okas okgo okka okko okok okor okra okro oksa okso ooaa ooak ooba oooo ooos oora oosa orab orak orao orar oras orba orbb orbo orbs orga orgo orgs orka orko oro- orok oror oros orra orro orrs orsa orsk orso osag osak osar osas osba osoo osor osos osro ossa ossb osso raab raag raak raas raba rabb rabk rabo rabs raga ragg rago rags raka rakk raob raok raos rara rarb rark raro rars rasa rask raso rass rbbb rbbr rbbs rbss rgba rkos rkss roab roag roak roar roas rob- roba robb robo robs roga rogg rogo roka rokk roko rokr roks roob roog rook roor roos rora rork roro rosa roso ross rras rrrr rsaa