nnn nno nnp nns nnt no- non noo nop nos not noy npn npo npp nps npt nsn nso nsp nss nst nsy ntn nto ntp nts ntt nyn nyo nyp nys nyt nyy on- onn ono onp ons ont ony oo- oon ooo oop oos oot op- opn opo opp ops opt opy os- osn oso osp oss ost ot- otn oto otp ots ott oyo oys p-p pn- pnn pno pnp pns pnt pny pon poo pop pos pot poy ppn ppo ppp pps ppt ps- psn pso psp pss pst psy pt- ptn pto ptp pts ptt pty py- pyn pyo pys pyt snn sno snp sns snt sny son soo sop sos sot soy spn spo spp sps spt spy ss- ssn sso ssp sss sst stn sto stp sts stt sty sy- syn syp sys syt tnn tno tnp tns tnt to- ton too top tos tot toy tpn tpo tpp tps tpt tsn tso tsp tss tst tsy ttn tto ttp tts ttt tty tyn tyo typ tys tyt ynn ynp yns yny yon yoo yop yos yot yoy ypo yps yso ysp yss yst ysy ytn yto ytp yts ytt yys yyt yyy