roor root rore rori rork roro rort rote roti rotk rotl roto rotr rott rrle rrrr rtee rtei rtle rtlt tbil tbit tbrb tebo teek teel teer teet teie teil teir teke tel- tele teli tell telo telt teok teor ter- tere teri terk tero terr tete teti teto tetr tett tibi tie- tiee tiei tiel tieo tier tiet tiit tike tiki tiko tile till tilo tilr tilt tirb tire tiri tirl tiro tirr tite titi tito titt tkol tlik tlli tobe tobi tobo tobt toee toei toek toer toet toie toil toit toke toki toko tol- tole toli tolk toll tolo tolt took tool toor toot tore tori tork toro torr tort tote toti toto totr tott tre- tree trei trek treo tret tri- trib trie trik tril trio trit troe troi troo trot trte trtr ttbb tteo tter ttoe tttt