a-a a-b aaa aab aad aak aao aar ab- aba abb abd abk abo abr ad- ada adb add adk ado adr aka akb akd akk ako akr aoa aob aod aok aoo aor ar- ara arb ard ark aro arr baa bab bad bak bao bar bba bbb bbd bbk bbo bbr bda bdb bdd bdk bdo bdr bka bkb bkk bko bkr boa bob bod bok boo bor bra brb brd brk bro brr daa dab dad dak dao dar dba dbb dbd dbk dbo dbr dda ddb ddd ddk ddo ddr dka dkb dkk dko dkr doa dob dod dok doo dor dra drb drd drk dro drr ka- kaa kab kad kak kao kar kba kbb kbd kbk kbo kbr kda kdb kdk kdo kdr kkb kkk kkr koa kob kod kok koo kor kra krd krk kro krr oaa oab oad oak oao oar ob- oba obb obd obk obo obr oda odb odd odo odr oka okb okd okk oko okr oo- ooa oob ood ook ooo oor or- ora orb ord ork oro orr ra- raa rab rad rak rao rar rba rbb rbd rbk rbo rbr rda rdb rdd rdo rdr rkb rkk rko roa rob rod rok roo ror rra rrb rrd rrk rrr

a-ak a-do a-ok aaaa aaab aaad aaar aaba aabb aabd aada aaka aaoo aara aard aaro abaa abab abad abak abar abb- abba abbb abbo abbr abda abdo aboa abob abod abok aboo abor abra abro adaa adab adad adak adao adar adba adda addd addo addr adob adod adok adoo ador adra adro akaa akao akar akka akko akok akr- akra aoba aora aorb arab arad arak arar arba arda ardo arka arko aroa arob arod aroo aror arr- arra arrk arro arrr baaa baad baak baar baba babb babo babr bada badb badd bado badr bak- baka bako bakr bar- bara barb bard bark baro barr bbad bbbb bbdd bbdo bd-r boab boad boak boar boba bobb bobo boda bodb bodo boka boko boob bood book boor bor- bora bord bork boro borr brab brad brak brao brda brdo brka brkb broa brob brod brok broo bror brrr d-bo daab daad daar daba dabb dabo dada dado daka dako dara darb dard dark daro darr dbar dddd dkba doab doak doar doba dobb dod- doda dodd dodo doka doko doob dood dook door dora dord dork doro dorr draa drab drad drak drar drba drda drob drod drra kaaa kaab kaak kaar kaba kabb kabd kabo kabr kad- kada kadd kado kadr kaka kakk kako kaoa kaok kaor kara karb kard kark karo karr kbaa kbab kbad kbak kbar kbba kbbb kbbd kbbk kbbo kbbr kbdb kbdo kbdr kbkb kbkk kbko kbkr kboa kbob kbod kbok kboo kbra kbrb kbrd kbrk kbro kdaa kdab kdad kdak kdao kdar kdbb kdbr kddb kddd kddk kddr kdka kdkb kdkd kdkk kdko kdkr kdok kdrb kdro kkaa kkar kkba kkbb kkbd kkbo kkbr kkda kkdd kkdo kkkk kkoa kkob kkoo kkor kkrb kkrk kkro kkrr koab koak koar koba kobb kobk kobo kobr koda kodk kodo koka kokb kokk koko kokr koob kook kooo koor kora korb kord kork koro korr krab krad krak krar krba krbb krbd krbk krbr krda krdd krdo krdr krka krkd krkk krko krkr kroa krob krod krok kroo kror krrb krrk krro krrr oara obad obak obba obbo obkb obok obor obra obro odbo odda oddd odoo odor odra okak okka okko okok okor okra okro ooaa ooak ooba ooda oooo oora oord orab orad orak orao orar orba orbb orbo orda ordo orka orko oro- orok oror orra orro raab raad raak raba rabb rabk rabo rada radd rado radr raka rakk raob raok rara rarb rark raro rbbb rbbr roab road roak roar rob- roba robb robo roda rodd rodo roka rokk roko rokr roob rood rook roor rora rork roro rrad rrrr

-aaa- -abad aabaa aabba aabra aakko abaab ababa abada abaka abako abara abbad abbar abbod abkar abkoo aboab aboad abobo abood abook abora abord abrad abrak abrar abrod adaba adada adado adaka adara adark adaro addra adkar adoar adobo adodb adoor adora adoro adrad adrar adroa akaba akabo akaoa akard akbar akkad akkra akobo akoda akoka akoko akrak akrar akro- ar-ab arab- araba arabo arada arado arara arbab arbar arbok arbor ardab ardak ardod ardor ardra arkar aroab aroad aroar aroba aroor arora arrak b-r-k baard babak babar babdo babka baboo babra badak badao badar baddo badod badoo badra bakar bakka bakoa bakra baoro baraa barab barad barak barao barar barba barda bardo bark- barka baro- baroa barok baroo baror barra barro bbook bdoor bo-bo boada board boaro bobak bobar bobko bobok bobr bodak bodd- bodor bokaa bokko bokod bokok bokor booba booko boora boord borak borba borbo borda bordo borka borko boro- boroa borod borok boroo borra borro braak brada brako brard brdda broad broak brobo broda brodd brodo brood brook brora brrar brrrr d-a-d d-rad d-rod d-rok daada daara dabar dabba dabra dadao dadar dadda daddo dadoo dadra dakar dakka dakor daoko daraa darab darak darba darda dardo darko darod daroo darra darro ddddd do-do doaba doado dobok dobra dobro dodab dodad dodoo dodro dokda dokdo dokka dooab dooar doodo doora dorab dorad dorra draba draka drbob drobo drood drook k-a-o k-b-d k-rab k-rad k-rob kaaba kabaa kabab kabad kabak kabar kabba kabob kabro kadar kadod kadro kakao kakar kakka kakko kako- kakod kakra kaooa karad karak karda kardo karka karob karok karoo ko-ko koara kobad kobar kobda kobra kodad kodak kodar kodok kodra kokab kokad kokak kokka kokko kokor kokra kooba kooka koord korab korak korba korbo korda koroa koror korra korro kraak kraar kraka kroda krodo o-r-b oaror obaba obara obodo obora oboro obrab obrad obrok odaba odara oddba okada okaka okara okkad okobo okoro ooooo oraba orara orbad ordro orobo orodo ra-ra raaba raaor raard rabab rabad rabak rabba rabda rabor radar radka rakaa rakab ro-ro roadb roark robab robak robar robbo