prbc prca prcc prcp pre- preb prec pree pren prep pret prna prnp prtc prtp prtr ptab ptca ptcc pten pter pttc raab raan raat raba rabb rabe rac- raca racc race ract raec raen raep raer rana ranc rane rann rant rapa rapc rape rapp rapt rara rarb rare rata rate ratp ratt rbbb rbbr rcac rcbc rccb rccc rcep rcet rcnr rcpt rctc rea- reac reae rean reap rear reat reba rebb rebe reca recc rece recp recr rect reeb reen reep reet rena rene renn rent repe repp repr rept rera rere rert reta rete retr rett rnbr rncp rnnt rntp rpca rpet rppn rpta rptn rrat rrna rrrr rtan rtca rtcc rtce rtee rtpa rttp taa- taan taar taat taba tabb tabc tabe taca tacc tace tact taec taen taer tana tane tann tant tapa tape tapp tapr tapt tara tarb tarc tare tarn tarp tarr tart tata tatb tate tatr tatt tbar tbca tbcb tbcc tbce tbrb tbta tbtp tcap tcca tccc tcep tcnn tcpa tctc teac tean tear teat teba teca tecr tect teec teen teer teet tena tenb tenc tene tenn tenp tent tepa tepe tepp ter- tera terc tere tern terp terr teta tete tetr tett tnbc tnca tncc tneb tpac tpap tpcp tper tppa tppp tppr tpte tptp tptr traa trab trac trae tran trap trat trca trcc tre- trea trec tree tren tret trna trpa trpc trpe trpn trpp trra trtc trte trtr ttab ttbb ttcn ttcp tten tter tttt