rinn riri rita riti ritt rnag rnai rndc rnin rnnt rntd rrad rrat rrna rrrr rtai rtan rtca rtcc rtcg rtdt rtnd taa- taag taan taar taat taca tacc taci tact tada tadg taga tagg tagi taia taig tain tair tait tana tand tang tani tann tant tara tarc tard targ tari tarn tarr tart tata tati tatr tatt tcad tcca tccc tcdd tcga tcnn tctc tdac tdna tdra tdri tgcc tgtc tiaa tian tiar tica ticc tidc tidd tiga tigi tigr tiit tina tinc tind ting tini tinn tint tira tird tiri tirr tita titc titi titt tnag tnca tncc tndd traa trac trad trag trai tran trat trca trcc tri- tria tric trig trin trit trna trng trra trtc trtr ttcn tttt