roti rotn roto rotr rott rrat rrna rrrr rtai rtan rtca rtcc rtce rtee rtei taa- taan taar taat taba tabb tabc tabe tabi tabo taca tacc tace taci taco tact taec taen taer taia tain taio tair tait tana tane tani tann tano tant taoa taor tara tarb tarc tare tari tarn taro tarr tart tata tatb tate tati tato tatr tatt tbar tbca tbcb tbcc tbce tbit tbrb tbta tcca tccc tcnn tcon tctc teac tean tear teat teba tebo teca teco tecr tect teec teen teer teet teia teic teie tein teir tena tenb tenc tene teni tenn teno tent teon teor ter- tera terc tere teri tern tero terr teta tete teti teto tetr tett tiaa tiab tian tiao tiar tiba tibi tica ticc tice tico tie- tiea tiee tiei tien tieo tier tiet tiit tina tinc tine tini tinn tino tint tion tira tirb tire tiri tiro tirr tita titc tite titi tito titt tnbc tnca tncc tneb toab toan toat toba tobe tobi tobo tobt toca toce toci toco toea toee toei toen toer toet toie toit tona tonb tone toni tonn tono tooa toon toor toot tora torc tore tori torn toro torr tort tota totc tote toti toto totr tott traa trab trac trae trai tran trao trat trca trcc tre- trea trec tree trei tren treo tret tri- tria trib tric trie trin trio trit trna trno troa troc troe troi tron troo trot trra trtc trte trtr ttab ttbb ttcn tten tteo tter ttoe tton tttt