reef reel reet refe reff refl refr reft rela relb rele rell relt rera rere rert reta rete retr rett rfae rfef rffc rffl rftc rlab rlee rlef rrat rrfc rrle rrrr rtbf rtca rtcc rtce rtee rtfb rtfc rtle rtlt taa- taaf taal taar taat taba tabb tabc tabe tabl taca tacc tace tacl tact taec tael taer tafa tafc tafe taff taft tala talc tale tall tara tarb tarc tare tarf tarr tart tata tatb tate tatr tatt tbaf tbar tbca tbcb tbcc tbce tbrb tbta tcca tccc tcfc tctc teac teal tear teat teba teca tecl tecr tect teec teef teel teer teet tefc teff tefl teft tel- tela telc tele tell telt ter- tera terc tere terf terr teta tete tetr tett tfae tfal tfca tfeb tfec tftc tlac traa trab trac trae traf tral trat trca trcc trcl tre- trea trec tree tref tret trfc trfr trra trtc trte trtr ttab ttbb tter ttfa ttfc ttff tttt