rna rnb rnc rnh rni rnm rnn rnr rnu rny rra rrb rrc rrh rri rrm rrn rrr rru rua rub ruc rue ruh rui rum run rur ruu ruy ry- rya ryc rye rym ryn ryr ryu ryy ua- uaa uab uac uae uah uai uam uan uar uau uay uba ubb ubc ube ubh ubi ubn ubr ubu uby uca ucb ucc uce uch uci ucm ucn ucr ucu uea ueb uec uee ueh uei uem uen uer uey uha uhb uhc uhe uhh uhi uhm uhr uhu uhy uia uib uic uie uii uim uin uir uiu um- uma umb umc ume umh umi umm umn umr umu un- una unb unc une unh uni unm unn unr unu uny ur- ura urb urc ure uri urm urn urr uru ury uua uuc uue uum uun uur uuu uyc uyi uyu yaa yab yac yae yah yai yam yan yar yau yay ybc ybe ybi ybm ybr yby yca ycc yce ych yci ycu ycy yea yeb yec yee yeh yei yem yen yer yey yha yhc yhe yhi yhu yie yih yii yim yin yir yma ymc yme ymi ymm yna yne ynn ynu yny yra yrc yre yrn yru yua yue yuh yui yum yun yur yuu yuy yyb yyc yye yyu yyy