-up nnn nno nnp nns nnu no- non noo nop nos nou noy npn npo npp nps npu nsn nso nsp nss nsu nsy nun nuo nup nus nuu nuy nyn nyo nyp nys nyu nyy on- onn ono onp ons onu ony oo- oon ooo oop oos op- opn opo opp ops opy os- osn oso osp oss osu ou- oun ouo oup ous oyo oys p-p pn- pnn pno pnp pns pnu pny pon poo pop pos pou poy ppn ppo ppp pps ppu ps- psn pso psp pss psu psy pun pup pus puu puy py- pyn pyo pys pyu snn sno snp sns snu sny son soo sop sos sou soy spn spo spp sps spu spy ss- ssn sso ssp sss ssu sun suo sup sus suu suy sy- syn syp sys syu un- unn uno unp uns unu uny uon uoo uop uos up- upn upo upp ups upu usn uso usp uss usu uun uus uuu uyo uys uyu ynn ynp yns ynu yny yon yoo yop yos you yoy ypo yps ypu yso ysp yss ysu ysy yun yuo yup yus yuu yuy yys yyu yyy