-er a-a a-b a-c a-t aaa aab aac aae aap aar aas aat ab- aba abb abc abe abp abr abs abt ac- aca acb acc ace acp acr acs act aea aeb aec aee aep aer aes aet ap- apa apb apc ape app apr aps apt ar- ara arb arc are arp arr ars art as- asa asb asc ase asp asr ass ast at- ata atb atc ate atp atr ats att b-p baa bab bac bae bap bar bas bat bba bbb bbc bbe bbp bbr bbs bbt bca bcb bcc bce bcp bcr bcs bct be- bea beb bec bee bep ber bes bet bpa bpb bpc bpe bpp bpr bps bpt bra brb bre brp brr brs brt bsa bsb bsc bse bsp bsr bss bst bta btb btc bte btp btr bts btt c-- caa cab cac cae cap car cas cat cba cbb cbc cbe cbp cbr cbs cbt cca ccb ccc cce ccp ccr ccs cct ce- cea ceb cec cee cep cer ces cet cpa cpb cpc cpe cpp cpr cps cpt cra crb crc cre crp crr crs crt csa csb csc cse csp csr css cst cta ctb ctc cte ctp ctr cts ctt eaa eab eac eae eap ear eas eat eba ebb ebc ebe ebp ebr ebs ebt ec- eca ecb ecc ece ecr ecs ect eea eeb eec eee eep eer ees eet ep- epa epb epc epe epp epr eps ept era erb erc ere erp err ers ert es- esa esb esc ese esp esr ess est eta etb etc ete etp etr ets ett p-p paa pab pac pae pap par pas pat pba pbb pbc pbe pbp pbr pbs pbt pca pcb pcc pce pcp pcr pcs pct pea peb pec pee pep per pes pet ppa ppb ppc ppe ppp ppr pps ppt pra prb prc pre prp prr prs prt ps- psa psb psc pse psp psr pss pst pt- pta ptb ptc pte ptp ptr pts ptt ra- raa rab rac rae rap rar ras rat rba rbb rbc rbe rbp rbr rbs rbt rca rcb rcc rce rcp rcr rcs rct re- rea reb rec ree rep rer res ret rpa rpb rpc rpe rpp rpr rps rpt rra rrb rrc rrp rrr rrs rrt rsa rsb rsc rse rsp rsr rss rst rta rtb rtc rte rtp rtr rts rtt saa sab sac sae sap sar sas sat sba sbb sbc sbe sbp sbr sbs sbt sca scb scc sce scp scr scs sct se- sea seb sec see sep ser ses set spa spb spc spe spp spr sps spt sr- sra srb src sre srp srr srs srt ss- ssa ssb ssc sse ssp ssr sss sst sta stb stc ste stp str sts stt taa tab tac tae tap tar tas tat tba tbb tbc tbe tbp tbr tbs tbt tca tcb tcc tce tcp tcr tcs tct te- tea teb tec tee tep ter tes tet tpa tpb tpc tpe tpp tpr tps tpt tra trb trc tre trp trr trs trt tsa tsb tsc tse tsp tsr tss tst tta ttb ttc tte ttp ttr tts ttt

-ase a-be aaaa aaab aaac aaae aaap aaar aaas aaba aabb aabc aabp aabt aaca aacb aacc aace aacp aacr aacs aact aaea aaec aaep aaes aapa aapc aaps aapt aara aarc aare aarp aars aart aasa aasc aase aass aast aata aatc aatt abaa abab abac abae abap abar abas abat abb- abba abbb abbe abbr abbs abbt abca abcb abcc abcp abcr abcs abct abec abee aber abes abet abpa abpc abpp abpr abps abra abrc abrs abs- absa abse absp abss abta abts ac-t acaa acab acac acae acap acar acas acat acba acca accc acce accp accs acct ace- acea acec acer aces acet acpa acpe acpr acps acpt acr- acra acrc acre acrr acrs acsa acsc acse acss acst acta actc acte acts actt aeac aeap aeas aebs aecb aect aeer aer- aera aerc aers aesc aess aest aeta aetc aetr aett apac apap apar apas apat apba apbr apbs apca apcb apcc apcr apcs apea apec apep aper apes apet appa appc appr apps appt apra aprc apre aprs aprt apsa apse apss apta aptc apte apts aptt arab arac arae arap arar aras arat arba arbe arbs arc- arca arce arcs arct area arec aree arep ares aret arpa arpe arps arr- arra arrc arre arrr arrs arrt ars- arsa arsc arse arst arta artc arte artr arts asaa asab asac asae asap asar asas asat asba asc- asca ascb ascc asce ascp ascr asct asea asec asee asep aser ases aset aspa aspc aspe aspr asps aspt asra asrc asrs assa assc asse assp assr asss asst asta astb astc aste astp astr asts at-t ataa atab atac atae atap atar atas atat atbs atca atcc atcr atcs atea atec atee atep ater ates atpr atra atrc atre atrp atsb atsc atse atst atta atte attp attr atts baaa baar baas baat baba babb babe babr babs bac- baca bacc bace bacs bact baer baes bapa bapc bape bapp baps bapt bar- bara barb barc bare barr bars bart basa basc base bass bast bata batc bate bats batt bbas bbbb bbbs bbeb bbet bbpr bbrc bcaa bcap bcar bcas bcat bcbc bcbp bcbs bcca bccc bccs bcec bcer bces bcet bcpp bcps bcra bcrs bcsa bcsc bcss bctc bcts beap bear beas beat beba bebb bebe beca becs beeb beep beer bees beet bera berc bere berr bers bert bes- besa bese bess best beta betc bete bets bett bpcp bpea bprc bpsa brab brac brae bras brat brca brcb brce brea breb brec bree brep brer bres bret brrr brrs brsb brsr brst brtc bsaa bsac bsap bsas bsat bscp bscs bsea bseb bsec bsee bser bses bset bspp bspr bsra bssc bsse bsts btaa btbp btcc btcs btec btps btrc btrt btss bttb