tsu tsy ttc tte ttg tti ttn tto ttr tts ttt ttu tty tuc tue tug tui tun tuo tur tus tut tuu tuy tyc tye tyg tyn tyo tyr tys tyt ucc uce ucg uci ucn uco ucr ucs uct ucu uec uee ueg uei uen uer ues uet uey ugc uge ugg ugi ugn ugo ugr ugs ugt ugu uic uie uig uii uin uio uir uis uit uiu un- unc une ung uni unn uno unr uns unt unu uny uoc uoe uog uon uoo uor uos uot ur- urc ure urg uri urn uro urr urs urt uru ury usc use usg usi usn uso usr uss ust usu utc ute uti utn uto utr uts utt utu uty uuc uue uug uun uur uus uut uuu uyc uyi uyo uys uyu ycc yce yci yco ycs ycu ycy yec yee yeg yei yen yeo yer yes yet yey ygc ygo yie yig yii yin yio yir yis yit yne yng ynn yns ynu yny yoc yoe yog yoi yon yoo yor yos yot you yoy yrc yre yrg yrn yro yrs yrt yru ysc yse ysg ysi yso ysr yss yst ysu ysy ytc yte ytn yto ytr yts ytt ytu yue yug yui yun yuo yur yus yut yuu yuy yyc yye yyg yys yyt yyu yyy