roti rotn roto rotr rott rrad rrah rrat rrna rrrr rtai rtan rtdt rtnd taa- taan taar taat tada tado taha tahi tahn taho tahr taia tain taio tair tait tana tand tanh tani tann tano tant taoa taor tara tard tari tarn taro tarr tart tata tath tati tato tatr tatt tdna tdor tdra tdri thaa thad thai than thao thar that thdr thi- thia thin thio thir thnt thon thoo thor thot thra thri thro thtr tiaa tian tiao tiar tidd tiht tiit tina tind tini tinn tino tint tion tira tird tiri tiro tirr tita tith titi tito titt tndd toad toan toat toda todd todi todo todt tohi toho toid toit tona tonh toni tonn tono tooa tood tooh toon toor toot tora tord tori torn toro torr tort tota totd toth toti toto totr tott traa trad trai tran trao trat tri- tria trin trio trit trna trno troa trod troi tron troo trot trra trtr tton tttt