-er a-a a-b a-c aaa aab aac aae aap aar aas ab- aba abb abc abe abp abr abs ac- aca acb acc ace acp acr acs aea aeb aec aee aep aer aes ap- apa apb apc ape app apr aps ar- ara arb arc are arp arr ars as- asa asb asc ase asp asr ass b-p baa bab bac bae bap bar bas bba bbb bbc bbe bbp bbr bbs bca bcb bcc bce bcp bcr bcs be- bea beb bec bee bep ber bes bpa bpb bpc bpe bpp bpr bps bra brb bre brp brr brs bsa bsb bsc bse bsp bsr bss c-- caa cab cac cae cap car cas cba cbb cbc cbe cbp cbr cbs cca ccb ccc cce ccp ccr ccs ce- cea ceb cec cee cep cer ces cpa cpb cpc cpe cpp cpr cps cra crb crc cre crp crr crs csa csb csc cse csp csr css eaa eab eac eae eap ear eas eba ebb ebc ebe ebp ebr ebs ec- eca ecb ecc ece ecr ecs eea eeb eec eee eep eer ees ep- epa epb epc epe epp epr eps era erb erc ere erp err ers es- esa esb esc ese esp esr ess p-p paa pab pac pae pap par pas pba pbb pbc pbe pbp pbr pbs pca pcb pcc pce pcp pcr pcs pea peb pec pee pep per pes ppa ppb ppc ppe ppp ppr pps pra prb prc pre prp prr prs ps- psa psb psc pse psp psr pss ra- raa rab rac rae rap rar ras rba rbb rbc rbe rbp rbr rbs rca rcb rcc rce rcp rcr rcs re- rea reb rec ree rep rer res rpa rpb rpc rpe rpp rpr rps rra rrb rrc rrp rrr rrs rsa rsb rsc rse rsp rsr rss saa sab sac sae sap sar sas sba sbb sbc sbe sbp sbr sbs sca scb scc sce scp scr scs se- sea seb sec see sep ser ses spa spb spc spe spp spr sps sr- sra srb src sre srp srr srs ss- ssa ssb ssc sse ssp ssr sss

-ase a-be aaaa aaab aaac aaae aaap aaar aaas aaba aabb aabc aabp aaca aacb aacc aace aacp aacr aacs aaea aaec aaep aaes aapa aapc aaps aara aarc aare aarp aars aasa aasc aase aass abaa abab abac abae abap abar abas abb- abba abbb abbe abbr abbs abca abcb abcc abcp abcr abcs abec abee aber abes abpa abpc abpp abpr abps abra abrc abrs abs- absa abse absp abss acaa acab acac acae acap acar acas acba acca accc acce accp accs ace- acea acec acer aces acpa acpe acpr acps acr- acra acrc acre acrr acrs acsa acsc acse acss aeac aeap aeas aebs aecb aeer aer- aera aerc aers aesc aess apac apap apar apas apba apbr apbs apca apcb apcc apcr apcs apea apec apep aper apes appa appc appr apps apra aprc apre aprs apsa apse apss arab arac arae arap arar aras arba arbe arbs arc- arca arce arcs area arec aree arep ares arpa arpe arps arr- arra arrc arre arrr arrs ars- arsa arsc arse asaa asab asac asae asap asar asas asba asc- asca ascb ascc asce ascp ascr asea asec asee asep aser ases aspa aspc aspe aspr asps asra asrc asrs assa assc asse assp assr asss baaa baar baas baba babb babe babr babs bac- baca bacc bace bacs baer baes bapa bapc bape bapp baps bar- bara barb barc bare barr bars basa basc base bass bbas bbbb bbbs bbeb bbpr bbrc bcaa bcap bcar bcas bcbc bcbp bcbs bcca bccc bccs bcec bcer bces bcpp bcps bcra bcrs bcsa bcsc bcss beap bear beas beba bebb bebe beca becs beeb beep beer bees bera berc bere berr bers bes- besa bese bess bpcp bpea bprc bpsa brab brac brae bras brca brcb brce brea breb brec bree brep brer bres brrr brrs brsb brsr bsaa bsac bsap bsas bscp bscs bsea bseb bsec bsee bser bses bspp bspr bsra bssc bsse caaa caab caac caap caas caba cabe cabs cac- caca cacc cace cacr caec caer caes capa capb capc cape capp caps cara carb carc care carp carr cars casa casb casc case casp casr cass cbac cbar cbbc cbbs cbca cbcc cbce cbcp cbcr cbcs cbea cbec cbee cber cbpc cbpp cbre cbsa cbsc cbse ccaa ccab ccac ccap ccar ccas ccba ccbc ccca cccb cccc cccp cccs ccee ccpa ccpe ccpp ccpr ccps ccra ccrc ccre ccrp ccrs ccsa ccsp ccss ceac cear ceas ceba cebp cebs cec- ceca cece cecp cecs ceeb ceec cees cepa cepc cepe cepp cepr ceps cer- cera cerc cere cerp cers cesa cesc cese cesp cesr cess cpaa cpac cpap cpas cpbc cpca cpce cpcs cpea cpeb cpep cper cppa cpps cpre cprs cpsa cpsc cpsr crab crac crap crar cras crbc crca crcc crce crcr cre- crea creb crec cree crep cres crpc crps crsa crsp crss csaa csab csac csar csas cscb cscc csce cscr cscs csea csec csee csep cser cspa cspb cspc cspe csps csra csrc csrs cssa csse cssr eaba eaca eacc eaec eapc eapp eaps eara earb eare earp ears easa ease ebac ebba ebbc ebbr ebbs ebcc eber ebes ebsa ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce eces ecpa ecpp ecra ecrc ecrr ecsa ecsc ecse ecsp ecss eeca eecs eeea eeee eees eeps eera eerc eers eese epaa epac epas epcc epec epee eper epes eppa eppc eppp epps epra eprb eprp eprs epsa epsc epsp epss erap eras erba erbb erbe erca ercc erce ercp ereb erec erer eres erpa erpe erps erra errc erre errs ersa erse esab esac esar esas esba esbs esca escb esce escr escs esea esee eser eses espa espc espe espp esps esra essa esse essp paap paar paas paba paca pace pacs paea paec