kkk kkn kkp kks kky kn- knk knn kno knp kok kon koo kop kos koy kpk kpn kpo kpp kps ksk ksn kso ksp kss kyn kyo kyp kys nkk nkn nko nkp nks nky nnk nnn nno nnp nns no- nok non noo nop nos noy npn npo npp nps nsk nsn nso nsp nss nsy nyk nyn nyo nyp nys nyy okk oko okp oks on- onk onn ono onp ons ony oo- ook oon ooo oop oos op- opk opn opo opp ops opy os- osk osn oso osp oss oyo oys p-p pkn pko pkp pks pky pn- pnk pnn pno pnp pns pny pok pon poo pop pos poy ppk ppn ppo ppp pps ps- psk psn pso psp pss psy py- pyk pyn pyo pys sk- skk sko skp sks sky snk snn sno snp sns sny sok son soo sop sos soy spk spn spo spp sps spy ss- ssk ssn sso ssp sss sy- syk syn syp sys ykk ykn ynk ynn ynp yns yny yok yon yoo yop yos yoy ypo yps ysk yso ysp yss ysy yys yyy