m-o mmm mmn mmo mmp mms mnm mnn mno mnp mns mom mon moo mop mos moy mpm mpn mpo mpp mps msm msn mso msp mss msy my- mym myn myo mys nmm nmn nmo nmp nms nnm nnn nno nnp nns no- nom non noo nop nos noy npm npn npo npp nps nsm nsn nso nsp nss nsy nym nyn nyo nyp nys nyy om- omm omn omo omp oms omy on- onn ono onp ons ony oo- oom oon ooo oop oos op- opm opn opo opp ops opy os- osm osn oso osp oss oyo oys p-p pmm pmn pmo pmp pms pn- pnm pnn pno pnp pns pny pom pon poo pop pos poy ppm ppn ppo ppp pps ps- psm psn pso psp pss psy py- pym pyn pyo pys smm smn smo smp sms smy snm snn sno snp sns sny som son soo sop sos soy spm spn spo spp sps spy ss- ssm ssn sso ssp sss sy- sym syn syp sys ymm ymo yms ynn ynp yns yny yom yon yoo yop yos yoy ypo yps ysm yso ysp yss ysy yys yyy