rna rnc rng rni rnn rnp rnr rnu rny rpa rpc rpe rpg rpi rpl rpn rpp rpr rpu rra rrc rrg rri rrl rrn rrp rrr rru rua ruc rue rug rui run rup rur ruu ruy ry- rya ryc rye ryg ryn ryr ryu ryy ua- uaa uac uae uag uai ual uan uap uar uau uay uca ucc uce ucg uci ucl ucn ucp ucr ucu uea uec uee ueg uei uel uen uep uer uey uga ugc uge ugg ugi ugl ugn ugp ugr ugu uia uic uie uig uii uil uin uip uir uiu ula ulc ule ulg uli ull uln ulp ulr ulu uly un- una unc une ung uni unl unn unp unr unu uny up- upa upc upe upg upi upn upp upr upu ur- ura urc ure urg uri url urn urp urr uru ury uua uuc uue uug uun uur uuu uyc uyi uyu yaa yac yae yag yai yal yan yap yar yau yay yca ycc yce yci ycl ycp ycu ycy yea yec yee yeg yei yel yen yep yer yey yga ygc ygl yie yig yii yin yip yir ylc yle ylg yli yll ylr yly yna yne yng ynn ynp ynu yny ypa ypg ypl ypu yra yrc yre yrg yrn yrp yru yua yue yug yui yul yun yup yur yuu yuy yyc yye yyg yyu yyy