a-ak a-be aaaa aaab aaac aaad aaae aaap aaar aaba aabb aabc aabd aabp aaca aacb aacc aacd aace aack aacp aacr aada aadc aade aaea aaec aaep aaka aake aapa aapc aara aarc aard aare aarp abaa abab abac abad abae abak abap abar abb- abba abbb abbe abbr abca abcb abcc abcd abcp abcr abda abec abed abee aber abpa abpc abpd abpp abpr abra abrc acaa acab acac acad acae acap acar acba acca accc accd acce accp acda acdb acdc acde acdp ace- acea acec aced acek acer ackd acke acpa acpd acpe acpr acr- acra acrc acre acrr adaa adab adac adad adae adak adap adar adba adbc adcc adda addc addd adde addr adea adeb adee ader adp- adra adre aeac aeap aecb aede aeer aeka aer- aera aerc aerd akaa akae akap akar akca aked akee aker akka akr- akra akre apac apak apap apar apba apbr apca apcb apcc apcd apcr apda apdd apea apec aped apep aper apke appa appc appd appr apra aprc apre arab arac arad arae arak arap arar arba arbe arc- arca arce arda ardc arde area arec ared aree arek arep arka arke arpa arpe arr- arra arrc arre arrk arrr baaa baad baak baar baba babb babe babr bac- baca bacc bace back bada badb badd bade badr baed baek baer bak- baka bake bakr bapa bapc bape bapp bar- bara barb barc bard bare bark barr bbad bbbb bbdd bbeb bbpr bbrc bcaa bcap bcar bcbc bcbp bcca bccc bcda bcde bcec bcer bcpp bcra bd-r bdbc bddc bdpc bead beak beap bear beba bebb bebe beca beck beda bede beeb beed beek beep beer beka beke bera berc berd bere berk berr bkpr bpcp bpda bpea bprc bprd brab brac brad brae brak brca brcb brce brda brea breb brec bred bree brek brep brer brka brkb brrr c-cd caaa caab caac caap caba cabe cac- caca cacc cace cack cacr cada cadc cadd cade cadr caec caer caka cake capa capb capc capd cape capp cara carb carc card care cark carp carr cbac cbar cbbc cbca cbcc cbce cbcp cbcr cbdb cbdc cbea cbec cbee cber cbka cbkr cbpc cbpp cbrd cbre ccaa ccab ccac ccad ccap ccar ccba ccbc ccca cccb cccc cccp ccdc ccdp ccdr cced ccee ccpa ccpe ccpp ccpr ccra ccrc ccre ccrp cd-e cd-r cdaa cdac cdad cdba cdda cddb cddr cdec cder cdre ceac cead cear ceba cebp cec- ceca cece cecp ceda cedd cede ceeb ceec ceke cepa cepc cepe cepp cepr cer- cera cerc cerd cere cerp ckac ckbc ckbe ckck cker ckpc ckpr ckrc ckrd cpaa cpac cpad cpap cpbc cpca cpce cpea cpeb cpep cper cppa cppd cpre crab crac crap crar crbc crca crcc crce crcr crda crdc cre- crea creb crec cred cree crep crkc crkp crpc daab daad daae daap daar daba dabb dabp daca dace dada dade daeb daer daka dake dapa dape dapp dara darb darc dard dare dark darp darr dbar dbcc dbcp dbpc dbpd dcbc dcca dccb dccc dccp dcdb dcra dcrk dddd ddrc ddre deac dead deae deak deap dear deba debe dec- deca decc decd dece deck deda dedd dede deeb deed deek deep deer dek- deka deke depa depc depe depp depr der- dera derb derc dere derk derp derr dkba dkdc dpaa dpac dpbc dpcp dper dppa dppc dprk draa drab drac drad drak drap drar drba drbc drca drda drea dred dree drek drra eaba eaca eacc eada eadb eadd eadp eaec eapc eapp eara earb eard eare earp ebac ebba ebbc ebbr ebcc ebed eber ecaa ecac ecad ecar ecbc ecbe ecca eccb eccc ecce ecdc eced ecka ecpa ecpd ecpp ecra ecrc ecrr edac edad edar edca edda eddc edde eddp ede- edea eder edra eeca eede eeea eeee eeka eeke eera eerc eka- ekab ekeb eked ekek eker ekka ekpe epaa epac epad epcc epec epee eper eppa eppc eppp epra eprb eprp erad erap erba erbb erbe erca ercc erce ercp erda erde ereb erec ered erer erke erpa erpe erra errc erre kaaa kaab kaak kaap kaar kaba kabb kabc kabd kabe kabr kacb kacc kacd kace kacp kad- kada kadd kade kadr kaep kaer kaka kakc kake kakk kap- kapa kapc kape kapp kara karb kard kare kark karp karr kbaa kbab kbac kbad kbae kbak kbap kbar kbba kbbb kbbc kbbd kbbe kbbk kbbr kbca kbcb kbce kbck kbcr kbdb kbde kbdr kbeb kbec kbed kbee kbek kber kbkb kbkk kbkr kbpa kbpc kbpe kbpk kbpr kbra kbrb kbrc kbrd kbre kbrk kcaa kcab kcac kcad kcap kcar kcba kcbc kcbd kcbk kcbr kcca kccb kccc kccd kcck kccr kcda kcdc kcdd kcdr kcea kceb kcec kced kcee kcep kckc kckk kckr kcpa kcpc kcpr kcrc kcrp kcrr kdaa kdab kdac kdad kdae kdak kdap kdar kdbb kdbr kdca kdcc kdcd kdce kdcr kddb kddc kddd kddk kddr kdeb kdec kdep kdka kdkb kdkd kdkk kdkr kdpr kdrb kea- kead keak keap kear keba kebb kebc kebe kebr keca keck kecr keda kedb kedc kedd kede kedp kedr keed keek keep keer keka kekb kekc keke kep- kepa kepc kepd kepe ker- kera kerb kerc kere kerk kerp kerr kkaa kkac kkap kkar kkba kkbb kkbd kkbe kkbr kkcb kkcd kkck kkcr kkda kkdc kkdd kkea kked kkkk kkpc kkpk kkrb kkrc kkre kkrk kkrr kpac kpad kpae kpak kpar kpba kpbb kpbd kpbe kpbr kpcc kpcr kpda kpdb kpdc kpdr kpek kper kpke kpkk kpkr kppc kppd kppk kppp kppr kprb kprc kprd kpre kprk kprp kprr krab krac krad krae krak krap krar krba krbb krbd krbe krbk krbr krca krcb krcc krcd krce krda krdc krdd krde krdr krea kreb krec kred kree krek krka krkc krkd krke krkk krkr krpa krpr krrb krrc krre krrk krrr paak paap paar paba paca pacd pace pack pada padd pade paea paec paep paer paka pake papa papb pape papp papr