a-ak a-be a-ok aaaa aaab aaac aaae aaap aaar aaba aabb aabc aabp aaca aacb aacc aace aack aaco aacp aacr aaea aaec aaep aaka aake aaoe aaoo aapa aapc aapo aara aarc aare aaro aarp abaa abab abac abae abak abap abar abb- abba abbb abbe abbo abbr abca abcb abcc abcp abcr abec abee aber aboa abob abok aboo abor abpa abpc abpp abpr abra abrc abro acaa acab acac acae acap acar acba acca accc acce acco accp ace- acea acec acek acer acke acoa acoe acop acor acpa acpe acpr acr- acra acrc acre acro acrr aeac aeap aecb aeer aeka aer- aera aerc aero akaa akae akao akap akar akca akee aker akka akko akok akpo akr- akra akre aoba aoca aoce aokp aopo aora aorb apac apak apao apap apar apba apbr apca apcb apcc apco apcr apea apec apep aper apke apo- apoc apoe apoo apop apor appa appc appr apra aprc apre apro arab arac arae arak arap arar arba arbe arc- arca arce arco area arec aree arek areo arep arka arke arko aroa arob aroe aroo aror arpa arpe arr- arra arrc arre arrk arro arrr baaa baak baar baba babb babe babo babr bac- baca bacc bace back baco baek baer bak- baka bake bako bakr bapa bapc bape bapp bar- bara barb barc bare bark baro barr bbbb bbeb bbpr bbrc bcaa bcap bcar bcbc bcbp bcca bccc bcec bcer bcor bcpp bcra beak beap bear beba bebb bebe bebo beca beck beeb beek beep beer beka beke beko beo- beok beor bepo bera berc bere berk bero berr bkpr boab boac boak boar boba bobb bobe bobo boca boce bock boco boea boec boee boeo boep boer boka boke boko boob booc booe book boop boor bopa bope bopp bor- bora bore bork boro borr bpcp bpea bpoe bprc brab brac brae brak brao brca brcb brce brea breb brec bree brek breo brep brer brka brkb broa brob broc broe brok broo bror brrr c-bo caaa caab caac caap caba cabe cabo cac- caca cacc cace cack caco cacr caec caer caka cake caor capa capb capc cape capo capp cara carb carc care cark caro carp carr cbac cbar cbbc cbca cbcc cbce cbcp cbcr cbea cbec cbee cber cbka cbko cbkr cbpc cbpp cbre ccaa ccab ccac ccap ccar ccba ccbc ccca cccb cccc cccp ccee ccob ccoc ccpa ccpe ccpp ccpr ccra ccrc ccre ccrp ceac cear ceba cebp cec- ceca cece ceco cecp ceeb ceec ceke ceop ceor cepa cepc cepe cepo cepp cepr cer- cera cerc cere cero cerp ckac ckbc ckbe ckck ckco cker ckoa ckob ckoc ckoo ckor ckpc ckpr ckrc coak coba cobb cobe cobo coca coce cock coco cocp coep cok- coka coke coko coob cook coop copa cope copo copp copr cor- cora corb corc core cork coro corp corr cpaa cpac cpap cpbc cpca cpce cpea cpeb cpep cper cppa cpre crab crac crap crar crbc crca crcc crce crcr cre- crea creb crec cree creo crep crkc crkp crob croc croe crok croo crop cror crpc eaba eaca eacc eaec eaop eapc eapp eara earb eare earo earp ebac ebba ebbc ebbo ebbr ebcc eber eboe eboo ebor ebpo ebro ecaa ecac ecao ecar ecbc ecbe ecca eccb eccc ecce ecco ecka ecko eco- ecop ecpa ecpp ecra ecrc ecrr eeca eeea eeee eeka eeke eeoc eera eerc eero eka- ekab ekco ekeb ekek eker ekka ekoa ekpe ekpo eoka eora eore epaa epac epcc epec epee eper epoc epor eppa eppc eppo eppp epra eprb epro eprp erap erba erbb erbe erca ercc erce ercp ereb erec erer erke erob eroc eroe eroo erpa erpe erra errc erre erro kaaa kaab kaak kaap kaar kaba kabb kabc kabe kabo kabr kacb kacc kace kaco kacp kaeo kaep kaer kaka kakc kake kakk kako kaoa kaoc kaok kaor kap- kapa kapc kape kapo kapp kara karb kare kark karo karp karr kbaa kbab kbac kbae kbak kbap kbar kbba kbbb kbbc kbbe kbbk kbbo kbbr kbca kbcb kbce kbck kbco kbcr kbeb kbec kbee kbek kbeo kber kbkb kbkk kbko kbkr kboa kbob kboc kboe kbok kboo kbpa kbpc kbpe kbpk kbpo kbpr kbra kbrb kbrc kbre kbrk kbro kcaa kcab kcac kcap kcar kcba kcbc kcbk kcbr kcca kccb kccc kcck kccr kcea kceb kcec kcee kceo kcep kckc kckk kcko kckr kcob kcoe kcor kcpa kcpc kcpo kcpr kcrc kcro kcrp kcrr kea- keak keap kear keba kebb kebc kebe kebr keca keck keco kecr keek keep keer keka kekb kekc keke keko keok kep- kepa kepc kepe ker- kera kerb kerc kere kerk kero kerp kerr kkaa kkac kkap kkar kkba kkbb kkbe kkbo kkbr kkcb kkck kkco kkcr kkea kkkk kkoa kkob kkoo kkor kkpc kkpk kkrb kkrc kkre kkrk kkro kkrr koab koac koae koak koap koar koba kobb kobc kobe kobk kobo kobr koca kocb kock kocp koea koka kokb kokc koke kokk koko kokp kokr koob kooc kook kooo koop koor kopa kopb kope kopp kopr kora korb korc kore kork koro korr kpac kpae kpak kpao kpar kpba kpbb kpbe kpbr kpcc kpcr kpek kper kpke kpkk kpkr kpoa kpob kpoc kpoe kpok kpoo kpop kppc kppk kppo kppp kppr kprb kprc kpre kprk kpro kprp kprr krab krac krae krak krap krar krba krbb krbe krbk krbr krca krcb krcc krce krco krea kreb krec kree krek kreo krka krkc krke krkk krko krkr kroa krob kroc kroe krok kroo krop kror krpa krpr krrb krrc krre krrk krro krrr o-eo oaer oake oara oare obak obba obbo obea obec ober obkb oboe obok obor obra obre obro ocab ocac ocak ocap ocbc occa occc oce ocee ocke ocpa ocpp ocra ocre ocro ocrr oec- oeca oecc oeec oepa oera oere okak okap oker okka okko okok okor okpe okpo okra okre okro ooaa ooak ooba oobe oocr ooer oooo oora oore opap opar opca