roa roc roe rog roi rol ron roo ror rou roy rra rrc rrg rri rrl rrn rrr rru rua ruc rue rug rui run ruo rur ruu ruy ry- rya ryc rye ryg ryn ryo ryr ryu ryy ua- uaa uac uae uag uai ual uan uao uar uau uay uca ucc uce ucg uci ucl ucn uco ucr ucu uea uec uee ueg uei uel uen uer uey uga ugc uge ugg ugi ugl ugn ugo ugr ugu uia uic uie uig uii uil uin uio uir uiu ula ulc ule ulg uli ull uln ulo ulr ulu uly un- una unc une ung uni unl unn uno unr unu uny uoa uoc uoe uog uol uon uoo uor ur- ura urc ure urg uri url urn uro urr uru ury uua uuc uue uug uun uur uuu uyc uyi uyo uyu yaa yac yae yag yai yal yan yao yar yau yay yca ycc yce yci ycl yco ycu ycy yea yec yee yeg yei yel yen yeo yer yey yga ygc ygl ygo yie yig yii yin yio yir ylc yle ylg yli yll ylr yly yna yne yng ynn ynu yny yoc yoe yog yoi yol yon yoo yor you yoy yra yrc yre yrg yrn yro yru yua yue yug yui yul yun yuo yur yuu yuy yyc yye yyg yyu yyy