a-be aaaa aaab aaae aaam aaap aaar aaba aabb aabm aabp aabt aaea aaem aaep aama aamb aame aamp aamr aapa aapm aapt aara aare aarm aarp aart aata aatt abaa abab abae abam abap abar abat abb- abba abbb abbe abbr abbt abee aber abet abma abmb abmt abpa abpm abpp abpr abra abta aeap aeer aemt aer- aera aeta aetr aett amaa amae amam amap amar amat amb- amba ambe ambr amee amer amet amm- amma amme ampa ampe ampm ampt amra amta amte amtp apam apap apar apat apba apbr apea apem apep aper apet apma appa appr appt apra apre aprt apta apte aptt arab arae aram arap arar arat arba arbe area aree arem arep aret arma arme armm armt arpa arpe arr- arra arre arrr arrt arta arte artr at-t ataa atab atae atap atar atat atea atee atem atep ater atm- atma atme atmp atpr atra atre atrm atrp atta atte attp attr baaa baam baar baat baba babb babe babm babr baer bama bamb bame bamm bamp bapa bape bapp bapt bar- bara barb bare barm barr bart bata bate batt bbbb bbeb bbet bbpr beam beap bear beat beba bebb bebe beeb beem beep beer beet bema beme bera bere berm berr bert beta bete bett bmaa bmep bmpt bpea brab brae bram brat brea breb bree brem brep brer bret brrm brrr btaa btbp btrt bttb eaba eama eame eapp eara earb eare earp eart eata eate ebam ebba ebbr eber eeea eeee eera eeta eete emae emam emar emba embe embr emer emet emma emme empa empe empt emra emre emta emte emtp epaa epam epbm epee eper eppa eppp epra eprb eprp epta epte eram erap erat erba erbb erbe ereb erem erer eret erma erme erpa erpe erra erre erta etam etap etat etbr etee etem eter etra etre etrm etta ette maaa maam maap maar maat maba mabe maee maem maer mama mame mamp mapa mape mapp mapr mar- mara mare marm marr mart mata mate matr matt mbam mbba mbta meap mear meat mebe meem meep meer meet mema meme memr mepe mer- mera merb mere merm merp mert met- meta mete mett mmaa mmab mmap mmar mmea mmmm mmpa mmpr mmrp mpaa mppe mppp mprp mpta mptp mrap mrbb mrbm mreb mree mrpa mrta mrtm mrtt mtaa mtab mtap mtep mtpa mtre mtrr mttr paap paar paat paba pabt paea paep paer pam- pama pamb pame pamm pamp papa papb pape papp papr par- para pare parm parp parr part pata pate patr patt pbar pbmr pbpa peab peap pear peat peba peep peer peet pemt pepa pepe per- pera pere perm perp perr pert peta pete petr pett pmaa pmat pmbr pmma pmmp pmpm pmrt ppap ppar pper pppa pppp pprm ppta pptt prae pram prar prat pre- preb pree prem prep pret prrm prtm prtp prtr ptab pter ptmp raab raam raat raba rabb rabe raep raer rama ramb rame ramm ramp rapa rape rapm rapp rapt rara rarb rare rata rate ratp ratt rbbb rbbr rea- reae ream reap rear reat reba rebb rebe reeb reem reep reet rema reme remp repe repp repr rept rera rere rert reta rete retr rett rmrp rpet rpta rrat rrmp rrrr rtee rtmp rtpa rttp taa- taar taat taba tabb tabe taem taer tama tame tamm tamp tapa tape tapp tapr tapt tara tarb tare tarm tarp tarr tart tata tatb tate tatr tatt tbar tbrb tbta tbtp team tear teat teba teem teer teet tema teme temp tepa tepe tepp ter- tera tere term terp terr teta tete tetr tett tmaa tmap tmbr tmep tmtt tpap tper tpmt tppa tppp tppr tpte tptp tptr traa trab trae tram trap trat tre- trea tree trem tret trma trmb trpa trpe trpm trpp trra trte trtr ttab ttbb tter ttma tttt