raab raat raba rabb rabe rabl rac- raca racc race ract raec rael raep raer rala ralb rale rall ralt rapa rapc rape rapl rapp rapt rara rarb rare rata rate ratp ratt rbbb rbbr rbcl rble rcac rcbc rccb rccc rcep rcet rcle rcpt rctc rea- reac reae real reap rear reat reba rebb rebe reca recc rece recp recr rect reeb reel reep reet rela relb rele rell relp relt repe repl repp repr rept rera rere rert reta rete retr rett rlab rlee rpca rpet rpta rrat rrle rrrr rtca rtcc rtce rtee rtle rtlt rtpa rttp taa- taal taar taat taba tabb tabc tabe tabl taca tacc tace tacl tact taec tael taer tala talc tale tall tapa tape tapp tapr tapt tara tarb tarc tare tarp tarr tart tata tatb tate tatr tatt tbar tbca tbcb tbcc tbce tbrb tbta tbtp tcap tcca tccc tcep tcpa tctc teac teal tear teat teba teca tecl tecr tect teec teel teer teet tel- tela telc tele tell telt tepa tepe tepp ter- tera terc tere terp terr teta tete tetr tett tlac tlpa tpac tpap tpcp tper tppa tppp tppr tpte tptp tptr traa trab trac trae tral trap trat trca trcc trcl tre- trea trec tree tret trpa trpc trpe trpp trra trtc trte trtr ttab ttbb ttcp tter tttt