tol ton too tos tot tou toy tsa tsc tsg tsi tsl tsn tso tss tst tsu tsy tta ttc ttg tti ttl ttn tto tts ttt ttu tty tua tuc tug tui tul tun tuo tus tut tuu tuy tya tyc tyg tyl tyn tyo tys tyt ua- uaa uac uag uai ual uan uao uas uat uau uay uca ucc ucg uci ucl ucn uco ucs uct ucu uga ugc ugg ugi ugl ugn ugo ugs ugt ugu uia uic uig uii uil uin uio uis uit uiu ula ulc ulg uli ull uln ulo uls ult ulu uly un- una unc ung uni unl unn uno uns unt unu uny uoa uoc uog uol uon uoo uos uot usa usc usg usi usl usn uso uss ust usu uta utc uti utl utn uto uts utt utu uty uua uuc uug uun uus uut uuu uyc uyi uyo uys uyu yaa yac yag yai yal yan yao yas yat yau yay yca ycc yci ycl yco ycs ycu ycy yga ygc ygl ygo yig yii yin yio yis yit ylc ylg yli yll yls ylt yly yna yng ynn yns ynu yny yoc yog yoi yol yon yoo yos yot you yoy ysa ysc ysg ysi ysl yso yss yst ysu ysy yta ytc ytl ytn yto yts ytt ytu yua yug yui yul yun yuo yus yut yuu yuy yyc yyg yys yyt yyu yyy