a-be aaaa aaab aaae aaap aaar aaba aabb aabp aabt aaea aaep aage aapa aapt aara aare aarp aart aata aatt abaa abab abae abag abap abar abat abb- abba abbb abbe abbr abbt abee aber abet abpa abpp abpr abra abta aeap aeer aega aer- aera aeta aetr aett agag agap agar agat agba agea agee agep ager aget agga agge agra agre agrp agta agte agtr apap apar apat apba apbg apbr apea apeg apep aper apet apga appa appr appt apra apre aprt apta apte aptt arab arae arag arap arar arat arba arbe area aree areg arep aret arga argb arge arpa arpe arr- arra arre arrg arrr arrt arta arte artr at-t ataa atab atae atap atar atat atea atee atep ater atpr atra atre atrp atta atte attp attr baaa baar baat baba babb babe babr baer baga bage bagg bagt bapa bape bapp bapt bar- bara barb bare barg barr bart bata bate batt bbbb bbeb bbet bbga bbpr bbrg beag beap bear beat beba bebb bebe beeb beeg beep beer beet bega begg bera bere berg berr bert beta bete bett bpea brab brae brag brat brea breb bree breg brep brer bret brrr btaa btbp btrt bttb eaba eaga eage eapp eara earb eare earp eart eata eate ebba ebbr eber eeea eeee eega eera eerg eeta eete egaa egae egar egat egba egbe egea egee eger eggb egge eggp egpa egpb egpe egra egre egta egte epaa epee eper eppa eppp epra eprb eprp epta epte erap erat erba erbb erbe ereb erer eret erg- erga ergg erpa erpe erra erre erta etag etap etat etbr etee eter etra etre etta ette gaap gaar gaba gabb gabe gabp gabr gabt gaea gaer gaga gage gagg gapa gape gapp gapt gara garb gare garg garp garr gart gata gate gatr gatt gbag gbap geab gear geat geba gebe geep geer geet gege gegg gepa gepe gera gerb gere gert geta getb gete getg gett ggbt gggg gpaa gper gpgp gpra gprp grab grae grap grat grbr grea greb gree greg grep gret grrr gtaa gtap gtbr gtea gtta paag paap paar paat paba pabt paea paep paer paga pagb page papa papb pape papg papp papr par- para pare parg parp parr part pata pate patr patt pbar pbpa peab peag peap pear peat peba peep peer peet pega pegg pepa pepe per- pera pere perg perp perr pert peta pete petr pett pgaa pger ppap ppar pper ppga pppa pppp ppta pptt prae prag prar prat pre- preb pree preg prep pret prtp prtr ptab pter raab raag raat raba rabb rabe raeg raep raer raga rage ragg rapa rape rapp rapt rara rarb rare rata rate ratp ratt rbbb rbbr rea- reae reap rear reat reba rebb rebe reeb reep reet rega rege regr regt repe repp repr rept rera rere rerg rert reta rete retr rett rgba rgbe rgtr rpet rpga rpta rrat rrrr rtee rtpa rttp taa- taag taar taat taba tabb tabe taer taga tage tagg tapa tape tapp tapr tapt tara tarb tare targ tarp tarr tart tata tatb tate tatr tatt tbar tbrb tbta tbtp tear teat teba teer teet tega tegg tegt tepa tepe tepp ter- tera tere terp terr teta tete tetr tett tpap tpbg tpeg tper tppa tppp tppr tpte tptp tptr traa trab trae trag trap trat tre- trea tree treg tret trge trpa trpe trpg trpp trra trte trtr ttab ttbb tter tttt