a-ak a-do a-ok aaaa aaab aaad aaap aaar aaba aabb aabd aabp aada aaka aaoo aapa aapo aara aard aaro aarp abaa abab abad abak abap abar abb- abba abbb abbo abbr abda abdo aboa abob abod abok aboo abor abpa abpd abpp abpr abra abro adaa adab adad adak adao adap adar adba adda addd addo addr adob adod adok adoo ador adp- adra adro akaa akao akap akar akka akko akok akpo akr- akra aoba aokp aopo aora aorb apak apao apap apar apba apbr apda apdd apo- apod apoo apop apor appa appd appr apra apro arab arad arak arap arar arba arda ardo arka arko aroa arob arod aroo aror arpa arr- arra arrk arro arrr baaa baad baak baar baba babb babo babr bada badb badd bado badr bak- baka bako bakr bapa bapp bar- bara barb bard bark baro barr bbad bbbb bbdd bbdo bbpr bd-r bkpr boab boad boak boar boba bobb bobo boda bodb bodo boka boko boob bood book boop boor bopa bopp bor- bora bord bork boro borr bpda bprd brab brad brak brao brda brdo brka brkb broa brob brod brok broo bror brrr d-bo daab daad daap daar daba dabb dabo dabp dada dado daka dako dapa dapp dara darb dard dark daro darp darr dbar dbpd dddd ddpo dkba doab doak doap doar doba dobb dod- doda dodd dodo doka doko doob dood dook doop door dopa dopo dopp dopr dora dord dork doro dorp dorr dpaa dppa dprk draa drab drad drak drap drar drba drda drob drod drop drra kaaa kaab kaak kaap kaar kaba kabb kabd kabo kabr kad- kada kadd kado kadr kaka kakk kako kaoa kaok kaor kap- kapa kapo kapp kara karb kard kark karo karp karr kbaa kbab kbad kbak kbap kbar kbba kbbb kbbd kbbk kbbo kbbr kbdb kbdo kbdr kbkb kbkk kbko kbkr kboa kbob kbod kbok kboo kbpa kbpk kbpo kbpr kbra kbrb kbrd kbrk kbro kdaa kdab kdad kdak kdao kdap kdar kdbb kdbr kddb kddd kddk kddr kdka kdkb kdkd kdkk kdko kdkr kdok kdpr kdrb kdro kkaa kkap kkar kkba kkbb kkbd kkbo kkbr kkda kkdd kkdo kkkk kkoa kkob kkoo kkor kkpk kkrb kkrk kkro kkrr koab koak koap koar koba kobb kobk kobo kobr koda kodk kodo koka kokb kokk koko kokp kokr koob kook kooo koop koor kopa kopb kopp kopr kora korb kord kork koro korr kpad kpak kpao kpar kpba kpbb kpbd kpbr kpda kpdb kpdo kpdr kpkk kpkr kpoa kpob kpod kpok kpoo kpop kppd kppk kppo kppp kppr kprb kprd kprk kpro kprp kprr krab krad krak krap krar krba krbb krbd krbk krbr krda krdd krdo krdr krka krkd krkk krko krkr kroa krob krod krok kroo krop kror krpa krpr krrb krrk krro krrr oara obad obak obba obbo obkb obok obor obra obro odbo odda oddd odoo odop odor odra odrp okak okap okka okko okok okor okpo okra okro ooaa ooak ooba ooda oooo oora oord opap opar opo- opor oppa oppo opra orab orad orak orao orar orba orbb orbo orda ordo orka orko oro- orok oror orra orro paak paap paar paba pada padd pado paka pako papa papb papp papr par- para pard park paro parp parr pbar pbpa pbpk pdpa pdpr poad poak poar poba pobo pod- poda podd podo poka poko pood pook poop poor pop- popa popo popp pora porb pork poro porr ppad ppap ppar ppdk ppoa ppod pppa pppd pppo pppp prad prao prar pro- proa prob prod proo prop prpd prrd raab raad raak raba rabb rabk rabo rada radd rado radr raka rakk raob raok raop rapa rapd rapp rara rarb rark raro rbbb rbbr rdap rdbp roab road roak roap roar rob- roba robb robo roda rodd rodo roka rokk roko rokr roob rood rook roop roor ropa ropo rora rork roro rpdp rpob rrad rrrr