a-ak a-do a-ha a-ok aaaa aaab aaac aaad aaah aaar aaba aabb aabc aabd aabh aaca aacb aacc aacd aach aack aaco aacr aada aadc aaha aahk aaka aaoo aara aarc aard aaro abaa abab abac abad abak abar abb- abba abbb abbo abbr abca abcb abcc abcd abch abcr abda abdo abha abho abhr aboa abob abod aboh abok aboo abor abra abrc abro acaa acab acac acad acar acba acca accc accd acch acco acda acdb acdc acha achh acho achr ackd acoa acod acoh acor acr- acra acrc acro acrr adaa adab adac adad adah adak adao adar adba adbc adcc adda addc addd addo addr adha adhd adho adob adoc adod adok adoo ador adra adro ahab ahac ahad ahah ahar ahha ahoa ahod ahok ahor ahra ahrc ahrr akaa akah akao akar akca akha akka akko akok akr- akra aoah aoba aoca aodh aora aorb arab arac arad arah arak arar arba arbh arc- arca arch arco arda ardc ardo arh- arka arkh arko aroa arob arod aroo aror arr- arra arrc arrh arrk arro arrr baaa baad baah baak baar baba babb babo babr bac- baca bacc bach back baco bada badb badd badh bado badr baha baho bahr bak- baka bakh bako bakr baoh bar- bara barb barc bard barh bark baro barr bbad bbbb bbch bbdd bbdo bbrc bcaa bcar bcbc bcca bccc bcda bchd bcor bcra bd-r bdbc bddc bddh bhao bhar bhca bhcc bhor bhra boab boac boad boak boar boba bobb bobo boca boch bock boco boda bodb bodh bodo boha bohd boho bohr boka boko boob booc bood booh book boor bor- bora bord borh bork boro borr brab brac brad brah brak brao brca brcb brda brdo brka brkb broa brob broc brod broh brok broo bror brrr c-bo c-cd caaa caab caac caah caba cabo cac- caca cacc cach cack caco cacr cada cadc cadd cado cadr caha caka caod caor cara carb carc card cark caro carr cbac cbar cbbc cbca cbcc cbcr cbdb cbdc cbdo cbha cbka cbko cbkr cbrd cbrh ccaa ccab ccac ccad ccar ccba ccbc ccca cccb cccc ccdc ccdh ccdr ccha cchr ccob ccoc ccod ccra ccrc cd-r cdaa cdac cdad cdba cdda cddb cddr chaa chab chac chad chah chak chao char chca chch chha chka chkb choc chod choh chok choo chor chra chrb chrc chrd chro chrr ckac ckbc ckch ckck ckco ckdo ckoa ckob ckoc ckoo ckor ckrc ckrd coad coak coba cobb cobh cobo coca coch cock coco coda codd coha coho cok- coka coko coob cood cooh cook cor- cora corb corc cord cork coro corr crab crac crar crbc crca crcc crcr crda crdc crkc crob croc crod croh crok croo cror d-bo daab daad daar daba dabb dabo daca dada dado daha daka dako dara darb darc dard dark daro darr dbar dbcc dcbc dcca dccb dccc dcdb dcra dcrk dddd ddoc ddrc dhaa dhad dhak dhao dhar dhod dhor dkba dkdc doab doak doar doba dobb doca doch dock doco dod- doda dodd dodo doha dohc dohr doka doko doob dood dook door dora dorc dord dork doro dorr draa drab drac drad drak drar drba drbc drca drda drob drod droh drra haab haad haak haar haba habo hack haco hada hadh haha haho haka hakk hako haor hara harc hard harh hark haro harr hbar hbcd hboc hcbc hcca hccb hccc hcch hcdr hcrd hdbk hdca hdda hdoc hdod hdra hhaa hhhh hkcc hoac hoad hoar hoba hobo hoca hoch hock hocr hoda hodh hodk hodr hoha hoho hoka hoko hood hook hoor hora horc hord hork horo horr hrac hrad hrdc hrob hrod hrrc kaaa kaab kaak kaar kaba kabb kabc kabd kabo kabr kacb kacc kacd kach kaco kad- kada kadd kado kadr kaha kahc kaho kahr kaka kakc kakh kakk kako kaoa kaoc kaok kaor kara karb kard kark karo karr kbaa kbab kbac kbad kbak kbar kbba kbbb kbbc kbbd kbbk kbbo kbbr kbca kbcb kbch kbck kbco kbcr kbdb kbdo kbdr kbhb kbhc kbhh kbhr kbkb kbkk kbko kbkr kboa kbob kboc kbod kbok kboo kbra kbrb kbrc kbrd kbrh kbrk kbro kcaa kcab kcac kcad kcah kcar kcba kcbc kcbd kcbk kcbr kcca kccb kccc kccd kcck kccr kcda kcdc kcdd kcdr kcha kchh kchk kcho kchr kckc kckk kcko kckr kcob kcoh kcor kcrc kcrh kcro kcrr kdaa kdab kdac kdad kdak kdao kdar kdbb kdbr kdca kdcc kdcd kdco kdcr kddb kddc kddd kddk kddr kdka kdkb kdkd kdkk kdko kdkr kdoc kdok kdrb kdro khab khac khad khak khao khar khbc khbd khbr khca khcb khcc khch khck khdc khdk khdr khhk khho khka khkk khkr khoa khob khoc khok khor khra khrd khrk khro khrr kkaa kkac kkar kkba kkbb kkbd kkbo kkbr kkcb kkcd kkch kkck kkco kkcr kkda kkdc kkdd kkdo kkha kkhb kkhh kkhk kkhr kkkk kkoa kkob kkoh kkoo kkor kkrb kkrc kkrh kkrk kkro kkrr koab koac koak koar koba kobb kobc kobk kobo kobr koca kocb kocd koch kock koda kodk kodo koha kohd kohh koho kohr koka kokb kokc kokh kokk koko kokr koob kooc kook kooo koor kora korb korc kord kork koro korr krab krac krad krah krak krar krba krbb krbd krbk krbr krca krcb krcc krcd krch krco krda krdc krdd krdo krdr krhc krka krkc krkd krkh krkk krko krkr kroa krob kroc krod kroh krok kroo kror krrb krrc krrk krro krrr oara obad obak obba obbo obkb obok obor obra obrh obro ocab ocac ocad ocak ocbc occa occc ocha ocra ocro ocrr odac odah odbo odda oddd odoh odoo odor odra ohad ohba ohcc ohho ohob ohoh ohok ohra okak okha okka okko okok okor okra okro ooaa ooak ooba oocr ooda ooha ooho oooh oooo oora oord orab orac orad orah orak orao orar orba orbb orbo orca orch orco orda ordo orka orko oro- orok oror orra orro raab raad raak raba