a-a a-b a-c aaa aab aac aae aak aap aas ab- aba abb abc abe abk abp abs ac- aca acb acc ace ack acp acs aea aeb aec aee aek aep aes aka akb akc ake akk akp aks ap- apa apb apc ape apk app aps as- asa asb asc ase ask asp ass b-p baa bab bac bae bak bap bas bba bbb bbc bbe bbk bbp bbs bca bcb bcc bce bck bcp bcs be- bea beb bec bee bek bep bes bka bkb bkc bke bkk bkp bks bpa bpb bpc bpe bpp bps bsa bsb bsc bse bsk bsp bss c-- caa cab cac cae cak cap cas cba cbb cbc cbe cbk cbp cbs cca ccb ccc cce cck ccp ccs ce- cea ceb cec cee cek cep ces cka ckb ckc cks cpa cpb cpc cpe cpk cpp cps csa csb csc cse csk csp css eaa eab eac eae eak eap eas eba ebb ebc ebe ebk ebp ebs ec- eca ecb ecc ece eck ecs eea eeb eec eee eek eep ees eka ekb ekc eke ekp eks ep- epa epb epc epe epp eps es- esa esb esc ese esk esp ess ka- kaa kab kac kae kak kap kas kba kbb kbc kbe kbk kbp kbs kca kcb kcc kce kck kcp kcs ke- kea keb kec kee kek kep kes kkb kkc kke kkk kkp kks kpa kpc kpe kpk kpp kps ksa ksb ksc kse ksk ksp kss p-p paa pab pac pae pak pap pas pba pbb pbc pbe pbk pbp pbs pca pcb pcc pce pck pcp pcs pea peb pec pee pek pep pes pka pkb pkc pke pkp pks ppa ppb ppc ppe ppk ppp pps ps- psa psb psc pse psk psp pss saa sab sac sae sak sap sas sba sbb sbc sbe sbk sbp sbs sca scb scc sce sck scp scs se- sea seb sec see sek sep ses sk- ska skb skc ske skk skp sks spa spb spc spe spk spp sps ss- ssa ssb ssc sse ssk ssp sss

-ase a-ak a-be aaaa aaab aaac aaae aaap aaas aaba aabb aabc aabp aaca aacb aacc aace aack aacp aacs aaea aaec aaep aaes aaka aake aapa aapc aaps aasa aasc aase aass abaa abab abac abae abak abap abas abb- abba abbb abbe abbs abca abcb abcc abcp abcs abec abee abes abpa abpc abpp abps abs- absa abse absp abss acaa acab acac acae acap acas acba acca accc acce accp accs ace- acea acec acek aces acke acks acpa acpe acps acsa acsc acse acss aeac aeap aeas aebs aecb aeka aesc aess akaa akae akap akas akca akee akes akka aksa apac apak apap apas apba apbs apca apcb apcc apcs apea apec apep apes apke appa appc apps apsa apse apss asaa asab asac asae asak asap asas asba asc- asca ascb ascc asce ascp asea asec asee asek asep ases aska aske asks aspa aspc aspe asps assa assc asse assk assp asss baaa baak baas baba babb babe babs bac- baca bacc bace back bacs baek baes bak- baka bake baks bapa bapc bape bapp baps basa basc base bask bass bbas bbbb bbbs bbeb bcaa bcap bcas bcbc bcbp bcbs bcca bccc bccs bcec bces bcpp bcps bcsa bcsc bcss beak beap beas beba bebb bebe beca beck becs beeb beek beep bees beka beke beks bes- besa bese besk bess bksp bpcp bpea bpsa bsaa bsac bsap bsas bscp bscs bsea bseb bsec bsee bses bspp bssc bsse caaa caab caac caap caas caba cabe cabs cac- caca cacc cace cack caec caes caka cake capa capb capc cape capp caps casa casb casc case cask casp cass cbac cbbc cbbs cbca cbcc cbce cbcp cbcs cbea cbec cbee cbka cbpc cbpp cbsa cbsc cbse ccaa ccab ccac ccap ccas ccba ccbc ccca cccb cccc cccp cccs ccee ccpa ccpe ccpp ccps ccsa ccsp ccss ceac ceas ceba cebp cebs cec- ceca cece cecp cecs ceeb ceec cees ceke cepa cepc cepe cepp ceps cesa cesc cese cesp cess ckac ckbc ckbe ckck ckcs ckpc cksa cksb cpaa cpac cpap cpas cpbc cpca cpce cpcs cpea cpeb cpep cppa cpps cpsa cpsc cpsk csaa csab csac csak csas cscb cscc csce cscs csea csec csee csep cska csks cspa cspb cspc cspe csps cssa csse eaba eaca eacc eaec eapc eapp eaps easa ease ebac ebba ebbc ebbs ebcc ebes ebsa ecaa ecac ecbc ecbe ecca eccb eccc ecce eces ecka ecks ecpa ecpp ecsa ecsc ecse ecsp ecss eeca eecs eeea eeee eees eeka eeke eeks eeps eese eesk eka- ekab ekeb ekek ekes ekka ekpe epaa epac epas epcc epec epee epes eppa eppc eppp epps epsa epsc epsp epss esab esac esas esba esbs esca escb esce escs esea esee esek eses eska eske esks espa espc espe espp esps essa esse essp kaaa kaab kaak kaap kaas kaba kabb kabc kabe kacb kacc kace kacp kacs kaep kaes kaka kakc kake kakk kaks kap- kapa kapc kape kapp kaps kas- kasa kasb kasc kase kask kasp kass kbaa kbab kbac kbae kbak kbap kbas kbba kbbb kbbc kbbe kbbk kbbs kbca kbcb kbce kbck kbcs kbeb kbec kbee kbek kbes kbkb kbkk kbpa kbpc kbpe kbpk kbps kbsa kbsb kbsk kbss kcaa kcab kcac kcap kcas kcba kcbc kcbk kcbs kcca kccb kccc kcck kcea kceb kcec kcee kcep kckc kckk kcpa kcpc kcps kcsa kcsb kcsc kcse kcsp kcss kea- keak keap keas keba kebb kebc kebe keca keck keek keep kees keka kekb kekc keke keks kep- kepa kepc kepe keps kesa kesb kesc kesk kesp kess kkaa kkac kkap kkba kkbb kkbe kkbs kkcb kkck kkcs kkea kkkk kkpc kkpk kkps kksa kkse kksp kkss kpac kpae kpak kpas kpba kpbb kpbe kpbs kpcc kpcs kpek kpke kpkk kppc kppk kppp kpsc kpsp ksab ksac ksak ksas ksba ksbc ksbp