-ey eee eem eeo eep ees eey em- eme emm emo emp ems eo- eoe eom eoo eop eos ep- epe epm epo epp eps es- ese esm eso esp ess esy eye eym eyo eyp eys m-o mee mem meo mep mes mey mme mmm mmo mmp mms moe mom moo mop mos moy mpe mpm mpo mpp mps mse msm mso msp mss msy my- mye mym myo mys oee oem oeo oep oes oey om- ome omm omo omp oms omy oo- oom ooo oop oos op- ope opm opo opp ops opy os- ose osm oso osp oss oye oyo oys p-p pee pem peo pep pes pey pme pmm pmo pmp pms poe pom poo pop pos poy ppe ppm ppo ppp pps ps- pse psm pso psp pss psy py- pye pym pyo pys se- see sem seo sep ses sey sme smm smo smp sms smy soe som soo sop sos soy spe spm spo spp sps spy ss- sse ssm sso ssp sss sy- sye sym syp sys yee yem yeo yep yes yey yme ymm ymo yms yoe yom yoo yop yos yoy ypo yps yse ysm yso ysp yss ysy yye yys yyy