a-a a-b aaa aab aag aao aar aas aau ab- aba abb abg abo abr abs abu ag- aga agb agg ago agr ags agu aoa aob aog aoo aor aos aou ar- ara arb arg aro arr ars aru as- asa asb asg aso asr ass asu au- aua aub aug auo aur aus b-u baa bab bag bao bar bas bau bba bbb bbg bbo bbr bbs bbu bga bgb bgg bgo bgr bgs bgu boa bob bog boo bor bos bou bra brb brg bro brr brs bru bsa bsb bsg bso bsr bss bsu bua bub bug buo bur bus buu gaa gab gag gao gar gas gau gba gbg gbo gbr gbs gbu gga ggb ggg ggo ggr ggs ggu goa gob gog goo gor gos gou gra grb grg gro grr grs gru gsa gsb gsg gso gsr gss gsu gu- gua gub gug guo gur gus guu oaa oab oag oao oar oas oau ob- oba obb obg obo obr obs obu oga ogg ogo ogs oo- ooa oob oog ooo oor oos or- ora orb org oro orr ors oru os- osa osb osg oso osr oss osu ou- oua ouo our ous ra- raa rab rag rao rar ras rau rba rbb rbg rbo rbr rbs rbu rga rgb rgg rgo rgr rgs roa rob rog roo ror ros rou rra rrb rrg rrr rrs rru rsa rsb rsg rso rsr rss rsu rua rub rug ruo rur rus ruu saa sab sag sao sar sas sau sba sbb sbg sbo sbr sbs sbu sga sgb sgg sgo sgr sgs sgu soa sob sog soo sor sos sou sr- sra srb srg sro srr srs ss- ssa ssb ssg sso ssr sss ssu sua sub sug suo sur sus suu ua- uaa uab uag uao uar uas uau uba ubb ubg ubo ubr ubs ubu uga ugb ugg ugo ugr ugs ugu uoa uob uog uoo uor uos ur- ura urb urg uro urr urs uru usa usb usg uso usr uss usu uua uug uur uus uuu

-ous aaaa aaab aaar aaas aaba aabb aaoo aara aaro aars aaru aasa aass aasu aaus abaa abab abag abar abas abau abb- abba abbb abbo abbr abbs aboa abob aboo abor abos abou abra abro abrs abs- absa abss absu abua abug abus ag-o agag agao agar agas agau agba agbo agga aggu agob agog agoo agos agou agra agro agsa agsg agsu agua agur agus aoba aora aorb aors aoss aous arab arag arar aras arau arba arbs arga argb argo args aroa arob aroo aror aros arr- arra arrg arro arrr arrs arru ars- arsa arso arsu arua arub arug asaa asab asag asao asar asas asau asba asbo asbu asob asog asor asos asou asra asrg asro asrs asru assa asso assr asss assu asub asur asus auaa auga augs aur- aura auro ausa ausu auug baaa baar baas baba babb babo babr babs babu baga bagg bago bags baos bar- bara barb barg baro barr bars baru basa baso bass basu bau- baug baur bbas bbau bbbb bbbs bbga bbrg bggs boab boag boar boas boba bobb bobo bobs bobu boga bogg bogo bogs boob boog boor boos bor- bora borg boro borr bors boru bosa boso boss bosu boua bour bous brab brag brao bras brau broa brob brog broo bror bros brou brrr brrs brsb brsr brug brus bsaa bsas bsgs bsos bsra buar buba bubb bubo bubs bubu buga bugg bugo bugs bur- bura burb burg buro burr burs buru busa buss busu buus gaar gaas gaba gabb gabo gabr gabs gabu gaga gagg gago gags gagu gaos gara garb garg garo garr gars gasa gasb gaso gasr gass gaua gaub gaur gaus gbag gbas gbbo gbbs gggg ggss goar goas goba gobo gobs goga gogo gogs goog goor goos gora gorb gorg goro gorr gors goso goss gosu gou- goug gour gous grab gras grau grbr grob grog groo gror gros grou grrr grrs grss grua grub grug grur grus gsab gsos gsur guaa guag guao guar guba gubb gubs gubu guga gugb gugg gugu guos gura gurb gurg guro gurr gurs guru gusa gusb guss guus oaau oara oars oass obas obba obbo obor obos obra obro obsr obss obus ogar ogb ogba ogoa ogog ogou ogra ogro ogus ooaa ooba oooo ooos oora oosa oous orab orao orar oras orba orbb orbo orbs orbu orga orgo orgs oro- oror oros orra orro orrs orsa orso orsu orub orus osag osar osas osba osoo osor osos osro ossa ossb osso ossu oubs our- oura ouro ours ousa ouu- raab raag raas raba rabb rabo rabs rabu raga ragg rago rags ragu raob raos rara rarb raro rars rasa raso rass rasu raua raub raus rbbb rbbr rbbs rbss rgba roab roag roar roas rob- roba robb robo robs robu roga rogg rogo roob roog roor roos rora roro roru rosa roso ross roua roub rous rras rrrr rsaa rsgb rsos rssa rsua ruag ruas ruba rubb rubs rubu ruga rugg rugs rura ruro rurs ruru rusa ruso russ rusu s-os saab saag saar saas saba sabb sabo sabr sabs sabu saga sagg sago sags sagu saor saos saou sara sarg saro sarr sars saru sasa saso sass saua saur saus sbaa sbar sbas sbbs sbor sbsa sbus sgaa sgau sggg sggs sgro sgss soar soas soba sobo sobr sobs sobu soga sogo sogs soog soor soos sora sorb sorg soro sorr sors soru sosa soso soss sour sous sras srgb sros srub ssaa ssab ssao ssas ssau ssbr ssgs ssra ssrg ssrs sssa sssb ssss suar suas sub- suba subb subg subo subs sug- suga sugg sugo suor suos sur- sura surg suro surr surs suru sus- susa suso suss susu suus uars uaru uasa uaua ubar ubba ubbo ubos ubra ugab ugao ugar uggo uggs ugos ugra ugro ugur uguu uor- urao uras urau urba urbs urga urgu uro- uroa uroo urra