nnn nno nnu no- non noo nor nou noy nrn nro nrr nru nry nun nuo nur nuu nuy nyn nyo nyu nyy on- onn ono onr onu ony oo- oon ooo oor or- orn oro orr oru ory ou- oun ouo our oyo rnn rno rnr rnu rny ron roo ror rou roy rrn rrr rru run ruo rur ruu ruy ry- ryn ryo ryr ryu ryy un- unn uno unr unu uny uon uoo uor ur- urn uro urr uru ury uun uur uuu uyo uyu ynn ynu yny yon yoo yor you yoy yrn yro yru yun yuo yur yuu yuy yyu yyy