a-a a-b aaa aab aad aak aam aao aar ab- aba abb abd abk abm abo abr ad- ada adb add adk adm ado adr aka akb akd akk akm ako akr ama amb amd amk amm amo amr aoa aob aod aok aom aoo aor ar- ara arb ard ark arm aro arr baa bab bad bak bam bao bar bba bbb bbd bbk bbm bbo bbr bda bdb bdd bdk bdm bdo bdr bka bkb bkk bkm bko bkr bma bmb bmd bmk bmm bmo bmr boa bob bod bok bom boo bor bra brb brd brk brm bro brr daa dab dad dak dam dao dar dba dbb dbd dbk dbm dbo dbr dda ddb ddd ddk ddm ddo ddr dka dkb dkk dkm dko dkr dma dmb dmd dmk dmm dmo dmr doa dob dod dok dom doo dor dra drb drd drk drm dro drr ka- kaa kab kad kak kam kao kar kba kbb kbd kbk kbm kbo kbr kda kdb kdk kdm kdo kdr kkb kkk kkm kkr kma kmb kmd kmk kmm kmo koa kob kod kok kom koo kor kra krd krk kro krr m-o m-r maa mab mad mak mam mao mar mba mbb mbd mbk mbm mbo mbr mda mdb mdd mdk mdm mdo mdr mka mkb mkd mkk mkm mko mkr mma mmb mmd mmk mmm mmo mmr moa mob mod mok mom moo mor mra mrb mrd mrk mrm mro mrr oaa oab oad oak oam oao oar ob- oba obb obd obk obm obo obr oda odb odd odm odo odr oka okb okd okk oko okr om- oma omb omd omm omo omr oo- ooa oob ood ook oom ooo oor or- ora orb ord ork orm oro orr ra- raa rab rad rak ram rao rar rba rbb rbd rbk rbm rbo rbr rda rdb rdd rdm rdo rdr rkb rkk rkm rko rma rmb rmd rmm rmo rmr roa rob rod rok rom roo ror rra rrb rrd rrk rrm rrr

a-ak a-do a-ok aaaa aaab aaad aaam aaar aaba aabb aabd aabm aada aaka aama aamb aamd aamo aamr aaoo aara aard aarm aaro abaa abab abad abak abam abar abb- abba abbb abbo abbr abda abdo abma abmb aboa abob abod abok aboo abor abra abro adaa adab adad adak adam adao adar adba adda addd addo addr adma admb admr adob adod adok adoo ador adra adro akaa akam akao akar akka akko akok akom akr- akra amaa amad amam amar amb- amba ambo ambr amda amdo amka amm- amma ammo amob amod amok amoo amor amra amro aoba aoma aora aorb arab arad arak aram arar arba arda ardm ardo arka arko arma armd armm armo aroa arob arod arom aroo aror arr- arra arrk arro arrr baaa baad baak baam baar baba babb babm babo babr bada badb badd bado badr bak- baka bako bakr bama bamb bamm bar- bara barb bard bark barm baro barr bbad bbbb bbdd bbdo bd-r bdrm bmaa bmdb boab boad boak boar boba bobb bobo boda bodb bodo boka boko boma bomb boob bood book boom boor bor- bora bord bork borm boro borr brab brad brak bram brao brda brdm brdo brka brkb broa brob brod brok brom broo bror brrm brrr d-bo daab daad daam daar daba dabb dabo dada dado daka dako dama damb damm damo dara darb dard dark daro darr dbar dddd dkba dmaa dmab dmba dmrb doab doak doar doba dobb dod- doda dodd dodo doka doko doma domb domm domo doob dood dook doom door dora dord dork dorm doro dorr draa drab drad drak dram drar drba drda drmk drob drod drom drra kaaa kaab kaak kaam kaar kaba kabb kabd kabo kabr kad- kada kadd kadm kado kadr kaka kakk kakm kako kam- kama kamb kamm kamo kamr kaoa kaok kaor kara karb kard kark karm karo karr kbaa kbab kbad kbak kbam kbar kbba kbbb kbbd kbbk kbbm kbbo kbbr kbdb kbdo kbdr kbkb kbkk kbko kbkr kbmb kbmo kbmr kboa kbob kbod kbok kboo kbra kbrb kbrd kbrk kbro kdaa kdab kdad kdak kdam kdao kdar kdbb kdbm kdbr kddb kddd kddk kddr kdka kdkb kdkd kdkk kdko kdkr kdma kdmd kdmo kdmr kdok kdom kdrb kdrm kdro kkaa kkam kkar kkba kkbb kkbd kkbo kkbr kkda kkdd kkdm kkdo kkkk kkma kkmk kkmo kkmr kkoa kkob kkoo kkor kkrb kkrk kkro kkrr kmad kmak kmam kmbd kmbr kmdb kmdo kmdr kmkk kmko kmmk kmmm kmmo kmmr kmoa kmob kmod kmok kmom kmor kmrb kmro kmrr koab koak koar koba kobb kobk kobo kobr koda kodk kodm kodo koka kokb kokk koko kokr koma komb komo komr koob kook kooo koor kora korb kord kork koro korr krab krad krak kram krar krba krbb krbd krbk krbm krbr krda krdd krdm krdo krdr krka krkd krkk krko krkr krma krmb krmd krmo krmr kroa krob krod krok krom kroo kror krrb krrk krrm krro krrr maaa maad maak maam maar maba mabo mada madb madd mado maka mako mama mamo maor mar- mara mard mark marm maro marr mbam mbba mbda mbdb mddm mdma mdmk mdra mkad mkak mmaa mmab mmar mmda mmdb mmmd mmmm mmod mmor moaa moab moam moar moba mobb mobo moda modd modo moka moko moma momo mooa moob mood mook moor mora morb mord mork moro mrad mrbb mrbm mrda mrdd mrkr mrmd oadm oama oara obad obak obba obbo obkb obok obor obra obro odam odbo odda oddd odma odmr odom odoo odor odra okak okam okka okko okmo okok okom okor okra okro omak omam omao omar ombo omda omdb omma omo- omoa omoo omor omra omro ooaa ooak ooba ooda ooma oooo oora oord orab orad orak oram orao orar orba orbb orbo orda ordo orka orko orma ormo oro- orok orom oror orra orro raab raad raak raam raba rabb rabk rabo rada radd radm rado radr raka rakk rama ramb ramm