tatt tatu taua taub tauc tauk taus taut tbas tbbs tbca tbcb tbcc tbgs tbst tbta tcbs tcca tccc tccu tcga tctc tcts tgcc tgtc tgts tkac tkkg tkts tsaa tsat tsau tsbc tsca tscc tscg tsgt tsks tssa tssg tsst tstc tsts ttab ttbb ttkg ttss tttt tuak tuas tuat tuba tubb tubs tubu tuca tucc tuck tuga tugg tugs tugu tuka tuks tusa tusc tusk tuss tust tuta tuts tutt tutu uabc uaca uasa uata uatu uaua ubac ubba ucak ucas ucat ucbc ucca ucka ucsa ucsb ucsc ucst ucsu ucua ucut ugab ugcc ugcg uggs uggt ugta uguu ukba ukcc uksa uksc uksg ukta us-a us-k usaa usac usag usak usas usat usba usbc usbs usca uscc uscg uscs usga uska ussa ussb ussc usss usst ussu usta ustb ustc usts usua usus utac utas utau utsa utsc uttu utug uuta uuuu