tti ttl ttm ttn tto ttt ttu tty tuc tue tug tui tul tum tun tuo tut tuu tuy tyc tye tyg tyl tym tyn tyo tyt ucc uce ucg uci ucl ucm ucn uco uct ucu uec uee ueg uei uel uem uen uet uey ugc uge ugg ugi ugl ugm ugn ugo ugt ugu uic uie uig uii uil uim uin uio uit uiu ulc ule ulg uli ull ulm uln ulo ult ulu uly um- umc ume umg umi uml umm umn umo umt umu un- unc une ung uni unl unm unn uno unt unu uny uoc uoe uog uol uom uon uoo uot utc ute uti utl utm utn uto utt utu uty uuc uue uug uum uun uut uuu uyc uyi uyo uyu ycc yce yci ycl yco ycu ycy yec yee yeg yei yel yem yen yeo yet yey ygc ygl ygm ygo yie yig yii yim yin yio yit ylc yle ylg yli yll ylm ylt yly ymc yme ymg ymi yml ymm ymo ymt yne yng ynn ynu yny yoc yoe yog yoi yol yom yon yoo yot you yoy ytc yte ytl ytm ytn yto ytt ytu yue yug yui yul yum yun yuo yut yuu yuy yyc yye yyg yyt yyu yyy