roro rort rotc rote roti rotl roto rotr rott rred rrle rrrr rtcc rtce rtdt rtee rtei rtle rtlt tccc tcdd tctc tdil tdor tdri tecl teco tecr tect tedd tede tedi teec teed teel teer teet teic teie teil teir tel- telc teld tele teli tell telo telt teor ter- terc tere teri tero terr tete teti teto tetr tett ticc tice tico tidc tidd tide tie- tied tiee tiei tiel tieo tier tiet tiit tild tile till tilo tilr tilt tird tire tiri tirl tiro tirr titc tite titi tito titt tlco tldr tlli toce toci toco todd tode todi todo todt toed toee toei toer toet toid toie toil toit tol- told tole toli toll tolo tolt tood tool toor toot torc tord tore tori toro torr tort totc totd tote toti toto totr tott trcc trcl tre- trec tred tree trei treo tret tri- tric trie tril trio trit troc trod troe troi troo trot trtc trte trtr tteo tter ttoe tttt