a-be aaaa aaab aaac aaae aaap aaar aaba aabb aabc aabp aabt aaca aacb aacc aace aacp aacr aact aaea aaec aaep aage aapa aapc aapt aara aarc aare aarp aart aata aatc aatt abaa abab abac abae abag abap abar abat abb- abba abbb abbe abbr abbt abca abcb abcc abcp abcr abct abec abee aber abet abpa abpc abpp abpr abra abrc abta ac-t acaa acab acac acae acag acap acar acat acba acca accc acce accp acct ace- acea acec acer acet acga acgr acpa acpe acpr acpt acr- acra acrc acre acrr acta actc acte actg actt aeac aeap aecb aect aeer aega aer- aera aerc aeta aetc aetr aett agac agag agap agar agat agba agca agcc agce agct agea agee agep ager aget agga agge agra agre agrp agta agte agtr apac apap apar apat apba apbg apbr apca apcb apcc apcr apea apec apeg apep aper apet apga appa appc appr appt apra aprc apre aprt apta aptc apte aptt arab arac arae arag arap arar arat arba arbe arc- arca arce arct area arec aree areg arep aret arga argb arge arpa arpe arr- arra arrc arre arrg arrr arrt arta artc arte artr at-t ataa atab atac atae atap atar atat atca atcc atcr atea atec atee atep ater atpr atra atrc atre atrp atta atte attp attr baaa baar baat baba babb babe babr bac- baca bacc bace bact baer baga bage bagg bagt bapa bapc bape bapp bapt bar- bara barb barc bare barg barr bart bata batc bate batt bbbb bbeb bbet bbga bbpr bbrc bbrg bcaa bcap bcar bcat bcbc bcbg bcbp bcca bccc bcec bcer bcet bcpp bcra bctc beag beap bear beat beba bebb bebe beca beeb beeg beep beer beet bega begg bera berc bere berg berr bert beta betc bete bett bgca bpcp bpea bprc brab brac brae brag brat brca brcb brce brea breb brec bree breg brep brer bret brrr brtc btaa btbp btcc btec btrc btrt bttb caaa caab caac caap caat caba cabe cabg cac- caca cacc cace cacr caec caer caga cage cagg cagr capa capb capc cape capp capt cara carb carc care carp carr cart cat- cata catb catc cate catt cbac cbar cbat cbbc cbca cbcc cbce cbcp cbcr cbct cbea cbec cbee cber cbet cbga cbgb cbpc cbpp cbre cbrt cbta cbtc ccaa ccab ccac ccag ccap ccar ccat ccba ccbc ccca cccb cccc cccp ccee ccga ccgc ccgt ccpa ccpe ccpp ccpr ccra ccrc ccre ccrg ccrp ccrt cctb cctc cctt ceac cear ceat ceba cebp cec- ceca cece cecp cect ceeb ceec cege cepa cepc cepe cepp cepr cept cer- cera cerc cere cerp cert cet- ceta cete cetp cgac cgap cgcc cgcg cger cgtp cpaa cpac cpag cpap cpbc cpca cpce cpea cpeb cpep cper cpga cpgb cppa cpre cprt cptp cptr crab crac crag crap crar crat crbc crca crcc crce crcr cre- crea creb crec cree creg crep cret crpc crrt crtc crtp ctab ctae ctag ctba ctca ctcp ctec ctep ctge ctpp ctrc ctrp ctta eaba eaca eacc eaec eaga eage eapc eapp eara earb eare earp eart eata eate ebac ebba ebbc ebbr ebcc eber ecaa ecac ecar ecat ecbc ecbe ecca eccb eccc ecce ecct ecpa ecpg ecpp ecra ecrc ecrr ect- ecta ectc eeca eeea eeee eega eera eerc eerg eeta eetc eete egaa egae egar egat egba egbe egcc egcg egcr egea egec egee eger eggb egge eggp egpa egpb egpe egra egre egta egte epaa epac epcc epec epee eper eppa eppc eppp epra eprb eprp epta epte erap erat erba erbb erbe erca ercc erce ercp ereb erec erer eret erg- erga ergg erpa erpe erra errc erre erta etag etap etat etbc etbr etcc etec etee eter etra etre etta ette gaap gaar gaba gabb gabe gabp gabr gabt gace gaea gaec gaer gaga gage gagg gapa gape gapp gapt gara garb gare garg garp garr gart gata gatc gate gatr gatt gbag gbap gc-c gcaa gcap gcat gcbc gccc gcet gcpc gcrg gctc geab gear geat geba gebe geca gece geep geer geet gege gegg gepa gepe gera gerb gere gert geta getb gete getg gett ggbt gggg gpaa gpac gpca gper gpgp gpra gprp grab grac grae grap grat grbr grcc grce grea greb grec gree greg grep gret grpc grrr grtc gtaa gtap gtbr gtcr gtea gtta paag paap paar paat paba pabt paca pace pact paea paec paep paer paga pagb page papa papb pape papg papp papr par- para parc pare parg parp parr part pata pate patr patt pbac pbar pbcc pbgc pbpa pcaa pcae pcap pcba pcbc pcca pccc pcce pcea pcep pcer pcgg pcpb pcpp pcra pcrc pcre pcte peab peac peag peap pear peat peba peca pece pecr pect peec peep peer peet pega pegg pepa pepe per- pera perc pere perg perp perr pert peta pete petr pett pgaa pgcc pgce pger pgrc ppac ppap ppar ppcc pper ppga pppa pppp pprc ppta pptt prae prag prar prat prbc prca prcc prcp pre- preb prec pree preg prep pret prtc prtp prtr ptab ptca ptcc pter pttc raab raag raat raba rabb rabe rac- raca racc race ract raec raeg raep raer raga rage ragg rapa rapc rape rapp rapt rara rarb rare rata rate ratp ratt rbbb rbbr rcac rcbc rccb rccc rcep rcet rcga rcgc rcpt rcrg rctc rctg rea- reac reae reap rear reat reba rebb rebe reca recc rece recp recr rect reeb reep reet rega rege regr regt repe repp repr rept rera rere rerg rert reta rete retr rett rgba rgbe rgtr rpca rpet rpga rpta rrat rrrr rtca rtcc rtce rtcg rtee rtpa rttp taa- taag taar taat taba tabb tabc tabe taca tacc tace tact taec taer taga tage tagg tapa tape tapp tapr tapt tara tarb tarc tare targ tarp tarr tart tata tatb tate tatr tatt tbar tbca tbcb tbcc tbce