a-ak a-do a-ha a-ok aaaa aaab aaad aaah aaar aaav aaba aabb aabd aabh aada aaha aahk aaka aaoo aara aard aaro aava abaa abab abad abak abar abb- abba abbb abbo abbr abda abdo abha abho abhr aboa abob abod aboh abok aboo abor abov abra abro abva abvd adaa adab adad adah adak adao adar adba adda addd addo addr adha adhd adho adob adod adok adoo ador adra adro advb ahab ahad ahah ahar ahha ahoa ahod ahok ahor ahra ahrr ahva akaa akah akao akar akha akka akko akok akr- akra aoah aoba aodh aora aorb arab arad arah arak arar arba arbh arda ardo arh- arka arkh arko aroa arob arod aroo aror arr- arra arrh arrk arro arrr arva arvo avab avao avar avda avor avra avro avva avvo baaa baad baah baak baar baba babb babo babr bada badb badd badh bado badr baha baho bahr bak- baka bakh bako bakr baoh bar- bara barb bard barh bark baro barr bava bbad bbbb bbdd bbdo bd-r bdav bddh bhao bhar bhor bhra boab boad boak boar boba bobb bobo boda bodb bodh bodo boha bohd boho bohr boka boko boob bood booh book boor bor- bora bord borh bork boro borr bova bovo brab brad brah brak brao brav brda brdo brka brkb broa brob brod broh brok broo bror brrr d-bo daab daad daar daba dabb dabo dada dado daha daka dako dara darb dard dark daro darr dava dbar dddd dhaa dhad dhak dhao dhar dhod dhor dkba doab doak doar doba dobb dod- doda dodd dodo doha dohr doka doko doob dood dook door dora dord dork doro dorr draa drab drad drak drar drba drda drob drod droh drra dvar dvda dvdr dvoa dvor dvra haab haad haak haar haba habo hada hadh haha haho haka hakk hako haor hara hard harh hark haro harr harv hava hbar hdbk hdda hdod hdra hhaa hhhh hoad hoar hoba hobo hoda hodh hodk hodr hoha hoho hoka hoko hood hook hoor hora hord hork horo horr hova hovk hrad hrob hrod hvar kaaa kaab kaak kaar kaba kabb kabd kabo kabr kad- kada kadd kado kadr kadv kaha kaho kahr kaka kakh kakk kako kaoa kaok kaor kara karb kard kark karo karr karv kava kavb kavh kavo kavv kbaa kbab kbad kbak kbar kbba kbbb kbbd kbbk kbbo kbbr kbdb kbdo kbdr kbdv kbhb kbhh kbhr kbkb kbkk kbko kbkr kbkv kboa kbob kbod kbok kboo kbov kbra kbrb kbrd kbrh kbrk kbro kbrv kbva kbvb kbvo kbvr 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 kdva kdvb kdvr kdvv khab khad khak khao khar khav khbd khbr khdk khdr khdv khhk khho khka khkk khkr khkv khoa khob khok khor khra khrd khrk khro khrr khrv khvh kkaa kkar kkba kkbb kkbd kkbo kkbr kkda kkdd kkdo kkdv kkha kkhb kkhh kkhk kkhr kkkk kkoa kkob kkoh kkoo kkor kkov kkrb kkrh kkrk kkro kkrr kkrv kkvr kkvv koab koak koar koba kobb kobk kobo kobr koda kodk kodo kodv koha kohd kohh koho kohr koka kokb kokh kokk koko kokr koob kook kooo koor koov kora korb kord kork koro korr korv kova kovk kovo kovr krab krad krah krak krar krav krba krbb krbd krbk krbr krda krdd krdo krdr krhv krka krkd krkh krkk krko krkr krkv kroa krob krod kroh krok kroo kror krov krrb krrk krro krrr krva krvb krvk krvo krvr krvv kvab kvah kvak kvar kvbr kvda kvoa kvob kvod kvoh kvok kvoo kvor kvov kvra kvrh kvro kvrr kvrv kvvr kvvv oara obad obak obba obbo obkb obok obor obra obrh obro odah odbo odda oddd odoh odoo odor odra odva ohad ohba ohho ohob ohoh ohok ohra okak okha okka okko okok okor okra okro ooaa ooak ooba ooda ooha ooho oooh oooo oora oord orab orad orah orak orao orar orav orba orbb orbo orda ordo orka orko oro- orok oror orra orro orvr ovar ovda ovhd ovo- ovod ovoo ovra raab raad raak raba rabb rabk rabo rada radd radh rado radr raha rahr raka rakk raob raoh raok rara rarb rark raro rava rbbb rbbr rboh rhoa rhob rhod rhoh roab road roak roar rob- roba robb robo roda rodd rodo roha rohr roka rokh rokk roko rokr roob rood rook roor rora rork roro rova rovo rrad rrah rrrr rvvh vaad vaar vada vado vaho vaka vara vard vark varr vava vhhh vkor voad voar voda vodo voho voka voor vor- vora vord voro vovk vrak vrav vrba vvob vvvv