a-ak a-be aaaa aaab aaac aaae aaap aaba aabb aabc aabp aaca aacb aacc aace aack aacp aaea aaec aaep aage aaka aake aapa aapc abaa abab abac abae abag abak abap abb- abba abbb abbe abca abcb abcc abcp abec abee abpa abpc abpp acaa acab acac acae acag acap acba acca accc acce accp ace- acea acec acek acga acke acpa acpe aeac aeap aecb aega aeka agac agag agap agba agca agcc agce agea agee agep agga agge akaa akae akap akca akee akeg akka apac apak apap apba apbg apca apcb apcc apea apec apeg apep apga apke appa appc baaa baak baba babb babe bac- baca bacc bace back baek baga bage bagg bak- baka bake bapa bapc bape bapp bbbb bbeb bbga bcaa bcap bcbc bcbg bcbp bcca bccc bcec bcpp beag beak beap beba bebb bebe beca beck beeb beeg beek beep bega begg beka beke bgca bkpg bpcp bpea caaa caab caac caap caba cabe cabg cac- caca cacc cace cack caec caga cage cagg caka cake capa capb capc cape capp cbac cbbc cbca cbcc cbce cbcp cbea cbec cbee cbga cbgb cbka cbkg cbpc cbpp ccaa ccab ccac ccag ccap ccba ccbc ccca cccb cccc cccp ccee ccga ccgc ccpa ccpe ccpp ceac ceba cebp cec- ceca cece cecp ceeb ceec cege ceke cepa cepc cepe cepp cgac cgap cgcc cgcg ckac ckbc ckbe ckck ckga ckpc ckpg cpaa cpac cpag cpap cpbc cpca cpce cpea cpeb cpep cpga cpgb cppa eaba eaca eacc eaec eaga eage eapc eapp ebac ebba ebbc ebcc ecaa ecac ecbc ecbe ecca eccb eccc ecce ecka ecpa ecpg ecpp eeca eeea eeee eega eeka eeke egaa egae egba egbe egcc egcg egea egec egee eggb egge eggp egpa egpb egpe eka- ekab ekeb ekek ekka ekpe epaa epac epcc epec epee eppa eppc eppp gaap gaba gabb gabe gabp gace gack gaea gaec gaga gage gagg gapa gape gapp gbag gbap gc-c gcaa gcap gcbc gccc gcpc geab geba gebe geca gece geck geek geep gege gegg gepa gepe gggg gpaa gpac gpca gpgp kaaa kaab kaag kaak kaap kaba kabb kabc kabe kabg kacb kacc kace kacp kaep kag- kaga kagb kagc kage kagg kaka kakc kake kakk kap- kapa kapc kape kapg kapp kbaa kbab kbac kbae kbak kbap kbba kbbb kbbc kbbe kbbg kbbk kbca kbcb kbce kbck kbeb kbec kbee kbek kbga kbgb kbge kbgg kbkb kbkg kbkk kbpa kbpc kbpe kbpg kbpk kcaa kcab kcac kcap kcba kcbc kcbk kcca kccb kccc kcck kcea kceb kcec kcee kceg kcep kcgc kckc kckk kcpa kcpc kea- keag keak keap keba kebb kebc kebe keca kecg keck keek keep kega kege kegg kegk keka kekb kekc keke kep- kepa kepc kepe kgab kgac kgak kgba kgbb kgbc kgcb kgcc kgce kgeb kgec kgga kggg kgpe kgpg kkaa kkac kkag kkap kkba kkbb kkbe kkbg kkcb kkck kkea kkeg kkgb kkkk kkpc kkpk kpac kpae kpak kpba kpbb kpbe kpbg kpcc kpek kpga kpgb kpge kpgg kpke kpkk kppc kppk kppp paag paak paap paba paca pace pack paea paec paep paga pagb page paka pake papa papb pape papg papp pbac pbcc pbgc pbpa pbpk pcaa pcae pcap pcba pcbc pcca pccc pcce pcea pcep pcgg pcpb pcpp peab peac peag peak peap peba peca pece peck peec peek peep pega pegg peka peke pekk pepa pepe pgaa pgcc pgce pkge ppac ppap ppcc ppga pppa pppp