tns tnt tpa tpc tpg tpi tpl tpn tpp tps tpt tpu tsa tsc tsg tsi tsl tsn tsp tss tst tsu tsy tta ttc ttg tti ttl ttn ttp tts ttt ttu tty tua tuc tug tui tul tun tup tus tut tuu tuy tya tyc tyg tyl tyn typ tys tyt ua- uaa uac uag uai ual uan uap uas uat uau uay uca ucc ucg uci ucl ucn ucp ucs uct ucu uga ugc ugg ugi ugl ugn ugp ugs ugt ugu uia uic uig uii uil uin uip uis uit uiu ula ulc ulg uli ull uln ulp uls ult ulu uly un- una unc ung uni unl unn unp uns unt unu uny up- upa upc upg upi upn upp ups upt upu usa usc usg usi usl usn usp uss ust usu uta utc uti utl utn utp uts utt utu uty uua uuc uug uun uus uut uuu uyc uyi uys uyu yaa yac yag yai yal yan yap yas yat yau yay yca ycc yci ycl ycp ycs ycu ycy yga ygc ygl yig yii yin yip yis yit ylc ylg yli yll yls ylt yly yna yng ynn ynp yns ynu yny ypa ypg ypl yps ypu ysa ysc ysg ysi ysl ysp yss yst ysu ysy yta ytc ytl ytn ytp yts ytt ytu yua yug yui yul yun yup yus yut yuu yuy yyc yyg yys yyt yyu yyy