a-a a-b aaa aab aad aak aao aar aau aav ab- aba abb abd abk abo abr abu abv ad- ada adb add adk ado adr adu adv aka akb akd akk ako akr aku akv aoa aob aod aok aoo aor aou aov ar- ara arb ard ark aro arr aru arv au- aua aub aud auk auo aur auv av- ava avb avd avk avo avr avu b-u baa bab bad bak bao bar bau bav bba bbb bbd bbk bbo bbr bbu bda bdb bdd bdk bdo bdr bdu bdv bka bkb bkk bko bkr bkv boa bob bod bok boo bor bou bov bra brb brd brk bro brr bru brv bua bub bud buk buo bur buu bva bvb bvd bvk bvo bvr bvu bvv daa dab dad dak dao dar dau dav dba dbb dbd dbk dbo dbr dbu dbv dda ddb ddd ddk ddo ddr ddu dka dkb dkk dko dkr dku doa dob dod dok doo dor dou dov dra drb drd drk dro drr dru drv dua dub dud duk duo dur duv dva dvb dvd dvk dvr dvu ka- kaa kab kad kak kao kar kau kav kba kbb kbd kbk kbo kbr kbu kda kdb kdk kdo kdr kdu kkb kkk kkr kku kkv koa kob kod kok koo kor kou kra krd krk kro krr kru krv kub kud kuk kur kuu kva kvb kvk kvo kvr kvv oaa oab oad oak oao oar oau oav ob- oba obb obd obk obo obr obu obv oda odb odd odo odr odu odv oka okb okd okk oko okr oku oo- ooa oob ood ook ooo oor oov or- ora orb ord ork oro orr oru orv ou- oua oud ouk ouo our ov- ova ovb ovd ovo ovv ra- raa rab rad rak rao rar rau rav rba rbb rbd rbk rbo rbr rbu rda rdb rdd rdo rdr rdu rdv rkb rkk rko rku rkv roa rob rod rok roo ror rou rov rra rrb rrd rrk rrr rru rua rub rud ruk ruo rur ruu ruv rva rvb rvd rvo rvr rvu rvv ua- uaa uab uad uak uao uar uau uav uba ubb ubk ubo ubr ubu ubv uda udb udd udk udo udr udu udv uka ukb ukk ukr uku uoa uob uod uok uoo uor ur- ura urb urd urk uro urr uru uua uur uuu uva uvb uvo uvu uvv v-a vaa vab vad vak vao var vau vav vba vbd vbk vbo vbr vbv vdb vdd vdk vdo vdr vdu vdv vka vkb voa vob vod vok voo vor vou vov vra vrb vrd vrk vrr vru vuk vur vuv vva vvb vvo vvr vvv

a-ak a-do a-ok aaaa aaab aaad aaar aaav aaba aabb aabd aada aadu aaka aaku aaoo aara aard aaro aaru aava abaa abab abad abak abar abau abb- abba abbb abbo abbr abda abdo abdu aboa abob abod abok aboo abor abou abov abra abro abua abud abuk abva abvd adaa adab adad adak adao adar adba adda addd addo addr addu adob adod adok adoo ador adra adro adua adub aduk adur advb akaa akao akar akka akko akku akok akr- akra akua aoba aora aorb arab arad arak arar arau arba arda ardo ardu arka arko aroa arob arod aroo aror arr- arra arrk arro arrr arru arua arub arud arva arvo auaa audo aur- aura aurd auro avab avao avar avda avor avou avra avro avur avva avvo baaa baad baak baar baba babb babo babr babu bada badb badd bado badr badu bak- baka bako bakr baku bar- bara barb bard bark baro barr baru bau- baud bauk baur bava bavu bbad bbau bbbb bbdd bbdo bd-r bdav boab boad boak boar boba bobb bobo bobu boda bodb bodo bodu boka boko boku boob bood book boor bor- bora bord bork boro borr boru boua boud bouk bour bova bovo brab brad brak brao brau brav brda brdo brka brkb broa brob brod brok broo bror brou brrr brud bruv buad buar buba bubb bubo bubu buda budb budd budo budu buka bukk buko buku bur- bura burb burd burk buro burr buru buvd bvdu d-bo daab daad daar daau daba dabb dabo dabu dada dado dadu daka dako daku daou dara darb dard dark daro darr daru daub daud dauk daur dava dbar dddd ddub dkba doab doak doar doba dobb dobu dod- doda dodd dodo doka doko doob dood dook door dora dord dork doro dorr doru doub doud douk dour draa drab drad drak drar drau drba drda drob drod drou drra drua drub druk druu druv duaa duab duad duar dub- duba dubb dubu duda dudd dudo dudu duka duku duo- dura durk duro duru duur duva dvar dvda dvdr dvoa dvor dvra kaaa kaab kaak kaar kaba kabb kabd kabo kabr kabu kad- kada kadd kado kadr kadu kadv kaka kakk kako kaku kaoa kaok kaor kara karb kard kark karo karr karu karv kau- kaub kaud kauk kauo kaur kava kavb kavo kavu kavv kbaa kbab kbad kbak kbar kbba kbbb kbbd kbbk kbbo kbbr kbbu kbdb kbdo kbdr kbdv kbkb kbkk kbko kbkr kbkv kboa kbob kbod kbok kboo kbov kbra kbrb kbrd kbrk kbro kbru kbrv kbua kbub kbud kbuk kbur kbuu kbva kbvb kbvo kbvr kbvu kdaa kdab kdad kdak kdao kdar kdav kdbb kdbr kdbv kddb kddd kddk kddr kdka kdkb kdkd kdkk kdko kdkr kdok kdov kdrb kdro kdrv kdub kdur kduv kdva kdvb kdvr kdvv kkaa kkar kkba kkbb kkbd kkbo kkbr kkda kkdd kkdo kkdv kkkk kkoa kkob kkoo kkor kkov kkrb kkrk kkro kkrr kkrv kkua kkuu kkvr kkvu kkvv koab koak koar koba kobb kobk kobo kobr kobu koda kodk kodo kodu kodv koka kokb kokk koko kokr koku koob kook kooo koor koou koov kora korb kord kork koro korr koru korv koua koub kour kouu kova kovk kovo kovr krab krad krak krar krav krba