a-ak a-do a-ok aaaa aaab aaac aaad aaar aaba aabb aabc aabd aaca aacb aacc aacd aack aaco aacr aacu aada aadc aadu aaka aaku aaoo aara aarc aard aaro aaru abaa abab abac abad abak abar abau abb- abba abbb abbo abbr abca abcb abcc abcd abcr abda abdo abdu aboa abob abod abok aboo abor abou abra abrc abro abua abud abuk acaa acab acac acad acar acba acca accc accd acco accu acda acdb acdc ackd acoa acod acor acou acr- acra acrc acro acrr acu- acuo acur adaa adab adac adad adak adao adar adba adbc adcc adda addc addd addo addr addu adob adoc adod adok adoo ador adra adro adua adub aduk adur akaa akao akar akca akka akko akku akok akr- akra akua aoba aoca aora aorb arab arac arad arak arar arau arba arc- arca arco arda ardc ardo ardu arka arko aroa arob arod aroo aror arr- arra arrc arrk arro arrr arru arua arub arud auaa auca audc audo aur- aura aurd auro baaa baad baak baar baba babb babo babr babu bac- baca bacc back baco bada badb badd bado badr badu bak- baka bako bakr baku bar- bara barb barc bard bark baro barr baru bau- baud bauk baur bbad bbau bbbb bbdd bbdo bbrc bcaa bcar bcbc bcca bccc bcda bcor bcra bcru bcuc bd-r bdbc bddc boab boac boad boak boar boba bobb bobo bobu boca bock boco bocu boda bodb bodo bodu boka boko boku boob booc bood book boor bor- bora bord bork boro borr boru boua boud bouk bour brab brac brad brak brao brau brca brcb brda brdo brka brkb broa brob broc brod brok broo bror brou brrr bruc brud buad buar buba bubb bubo bubu buca bucc buck buco bucu buda budb budd budo budu buka bukk buko buku bur- bura burb burd burk buro burr buru c-bo c-cd caaa caab caac caba cabo cabu cac- caca cacc cack caco cacr cada cadc cadd cado cadr cadu caka caod caor cara carb carc card cark caro carr cauc cauk cauo cbac cbar cbbc cbca cbcc cbcr cbcu cbdb cbdc cbdo cbka cbko cbkr cbrd ccaa ccab ccac ccad ccar ccba ccbc ccca cccb cccc cccu ccdc ccdr ccob ccoc ccod ccra ccrc ccuc cd-r cdaa cdac cdad cdba cdda cddb cddr ckac ckbc ckck ckco ckdo ckdu ckoa ckob ckoc ckoo ckor ckrc ckrd coad coak coba cobb cobo cobu coca cock coco cocu coda codd cok- coka coko coob cood cook cor- cora corb corc cord cork coro corr coua coub coud couk cour crab crac crar crau crbc crbu crca crcc crcr crda crdc crkc crob croc crod crok croo cror crub crud cruk cuau cub- cuba cubb cuca cucc cuck cuda cuk- cuka cura curb curd curo curr d-bo daab daad daar daau daba dabb dabo dabu daca dada dado dadu daka dako daku daou dara darb darc dard dark daro darr daru daub daud dauk daur dbar dbcc dcbc dcca dccb dccc dccu dcdb dcra dcrk dddd ddoc ddrc ddub dkba dkdc doab doak doar doba dobb dobu doca dock doco docu dod- doda dodd dodo doka doko doob dood dook door dora dorc dord dork doro dorr doru doub douc doud douk dour draa drab drac drad drak drar drau drba drbc drca drda drob drod drou drra drua drub druk druu duaa duab duad duar dub- duba dubb dubc dubu duca duck duco duda dudd dudo dudu duka duku duo- dura durk duro duru duur kaaa kaab kaak kaar kaba kabb kabc kabd kabo kabr kabu kacb kacc kacd kaco kacu kad- kada kadd kado kadr kadu kaka kakc kakk kako kaku kaoa kaoc kaok kaor kara karb kard kark karo karr karu kau- kaub kauc kaud kauk kauo kaur kbaa kbab kbac kbad kbak kbar kbba kbbb kbbc kbbd kbbk kbbo kbbr kbbu kbca kbcb kbck kbco kbcr kbcu kbdb kbdo kbdr kbkb kbkk kbko kbkr kboa kbob kboc kbod kbok kboo kbra kbrb kbrc kbrd kbrk kbro kbru kbua kbub kbuc kbud kbuk kbur kbuu kcaa kcab kcac kcad kcar kcau kcba kcbc kcbd kcbk kcbr kcbu kcca kccb kccc kccd kcck kccr kccu kcda kcdc kcdd kcdr kcdu kckc kckk kcko kckr kcob kcor kcou kcrc kcro kcrr kcru kcua kcub kcuk 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 kdub kduc kdur kkaa kkac kkar kkba kkbb kkbd kkbo kkbr kkcb kkcd kkck kkco kkcr kkda kkdc kkdd kkdo kkkk kkoa kkob kkoo kkor kkrb kkrc kkrk kkro kkrr kkua kkuu koab koac koak koar koba kobb kobc kobk kobo kobr kobu koca kocb kocd kock koda kodk kodo kodu koka kokb kokc kokk koko kokr koku koob kooc kook kooo koor koou kora korb korc kord kork koro korr koru koua koub kour kouu krab krac krad krak krar krba krbb krbd krbk krbr krca krcb krcc krcd krco krcu krda krdc krdd krdo krdr krdu krka krkc krkd krkk krko krkr krku kroa krob kroc krod krok kroo kror krrb krrc krrk krro krrr krua kruc kruk krur kuac kuar kuau kuba kubb kubc kubd kubo kubr kubu kuca kucb kucc kucd kuco kucr kuda kudd kudo kudu kuka kukk kuku kuoa kuok kuoo kura kurb kurd kurk kuro kurr kuru kuub kuuk kuur kuuu oaau oara obad obak obba obbo obkb obok obor obra obro ocab ocac ocad ocak ocbc occa occc ocra ocro ocrr ocur odac odbo odda oddd odoo odor odou odra odur okak okcu okka okko okok okor okra okro okur ooaa ooak ooba oocr ooda ooku oooo oora oord orab orac orad orak orao orar orba orbb orbo orbu orca orco orda ordo ordu orka orko oro- orok oror orra orro orub ouac ouad oucc oudc our- oura ouro ouu- raab raad raak raba rabb rabk rabo rabu rac- raca racc rack