a-a a-b aaa aab aad aak aao aar aas aau ab- aba abb abd abk abo abr abs abu ad- ada adb add adk ado adr ads adu aka akb akd akk ako akr aks aku aoa aob aod aok aoo aor aos aou ar- ara arb ard ark aro arr ars aru as- asa asb asd ask aso asr ass asu au- aua aub aud auk auo aur aus b-u baa bab bad bak bao bar bas bau bba bbb bbd bbk bbo bbr bbs bbu bda bdb bdd bdk bdo bdr bds bdu bka bkb bkk bko bkr bks boa bob bod bok boo bor bos bou bra brb brd brk bro brr brs bru bsa bsb bsd bsk bso bsr bss bsu bua bub bud buk buo bur bus buu daa dab dad dak dao dar das dau dba dbb dbd dbk dbo dbr dbs dbu dda ddb ddd ddk ddo ddr dds ddu dka dkb dkk dko dkr dks dku doa dob dod dok doo dor dos dou dra drb drd drk dro drr drs dru dsa dsb dsd dsk dso dsr dss dsu dua dub dud duk duo dur dus ka- kaa kab kad kak kao kar kas kau kba kbb kbd kbk kbo kbr kbs kbu kda kdb kdk kdo kdr kds kdu kkb kkk kkr kks kku koa kob kod kok koo kor kos kou kra krd krk kro krr krs kru ksa ksb ksd ksk kso ksr kss ksu kub kud kuk kur kus kuu oaa oab oad oak oao oar oas oau ob- oba obb obd obk obo obr obs obu oda odb odd odo odr ods odu oka okb okd okk oko okr oks oku oo- ooa oob ood ook ooo oor oos or- ora orb ord ork oro orr ors oru os- osa osb osd osk oso osr oss osu ou- oua oud ouk ouo our ous ra- raa rab rad rak rao rar ras rau rba rbb rbd rbk rbo rbr rbs rbu rda rdb rdd rdo rdr rds rdu rkb rkk rko rks rku roa rob rod rok roo ror ros rou rra rrb rrd rrk rrr rrs rru rsa rsb rsd rsk rso rsr rss rsu rua rub rud ruk ruo rur rus ruu saa sab sad sak sao sar sas sau sba sbb sbd sbk sbo sbr sbs sbu sda sdb sdd sdk sdo sdr sds sdu sk- ska skb skd skk sko skr sks sku soa sob sod sok soo sor sos sou sr- sra srb srd srk sro srr srs ss- ssa ssb ssd ssk sso ssr sss ssu sua sub sud suk suo sur sus suu ua- uaa uab uad uak uao uar uas uau uba ubb ubk ubo ubr ubs ubu uda udb udd udk udo udr uds udu uka ukb ukk ukr uku uoa uob uod uok uoo uor uos ur- ura urb urd urk uro urr urs uru usa usb usd usk uso usr uss usu uua uur uus uuu

-ous a-ak a-do a-ok aaaa aaab aaad aaar aaas aaba aabb aabd aada aads aadu aaka aaku aaoo aara aard aaro aars aaru aasa aasd aass aasu aaus abaa abab abad abak abar abas abau abb- abba abbb abbo abbr abbs abda abdo abdu aboa abob abod abok aboo abor abos abou abra abro abrs abs- absa absd abss absu abua abud abuk abus adaa adab adad adak adao adar adas adba adda addd addo addr adds addu adob adod adok adoo ador ados adra adro adrs adsa adso adsr adss adua adub aduk adur akaa akao akar akas akka akko akku akok akos akr- akra aksa aksu akua aoba aoks aora aorb aors aosd aoss aous arab arad arak arar aras arau arba arbs arda ardo ards ardu arka arko arks aroa arob arod aroo aror aros arr- arra arrk arro arrr arrs arru ars- arsa arsd arsk arso arsu arua arub arud asaa asab asad asak asao asar asas asau asba asbo asbu asda asdo asds aska asko askr asks asob asod asok asor asos asou asra asro asrs asru assa assd assk asso assr asss assu asub asud asur asus auaa audo auks aur- aura aurd auro ausa ausd ausu baaa baad baak baar baas baba babb babo babr babs babu bada badb badd bado badr bads badu bak- baka bako bakr baks baku baos bar- bara barb bard bark baro barr bars baru basa bask baso bass basu bau- baud bauk baur bbad bbas bbau bbbb bbbs bbdd bbdo bd-r bdos bdsd boab boad boak boar boas boba bobb bobo bobs bobu boda bodb bodo bods bodu boka boko boks boku boob bood book boor boos bor- bora bord bork boro borr bors boru bosa bosk boso boss bosu boua boud bouk bour bous brab brad brak brao bras brau brda brdo brds brka brkb broa brob brod brok broo bror bros brou brrr brrs brsb brsr brud brus bsaa bsas bsbd bsod bsos bsra bsrd bssd buad buar buba bubb bubo bubs bubu buda budb budd budo buds budu buka bukk buko buku bur- bura burb burd burk buro burr burs buru busa busk buss busu buus d-bo daab daad daar daas daau daba dabb dabo dabs dabu dada dado dads dadu daka dako daks daku daos daou dara darb dard dark daro darr dars daru dasa dasb dasd dask dass daub daud dauk daur daus dbar dbas dbos dbrs dbsa dbss dbus dddd ddss ddub dkba doab doak doar doas doba dobb dobs dobu dod- doda dodd dodo dods doka doko doob dood dook door doos dora dord dork doro dorr dors doru dosa dosk doso doss doub doud douk dour dous draa drab drad drak drar dras drau drba drda drob drod drou drra drrs drsa drua drub druk drus druu dsba dsda dsdr dsoa dsos dsrr dssa duaa duab duad duar duas dub- duba dubb dubs dubu duda dudd dudo duds dudu duka duku duo- duos dura durk duro duru dusa