-er -ey eee eef eem eeo eep eer ees eey ef- efe eff efm efo efp efr efs em- eme emf emm emo emp emr ems eo- eoe eof eom eoo eop eor eos ep- epe epf epm epo epp epr eps ere erf erm ero erp err ers ery es- ese esf esm eso esp esr ess esy eye eym eyo eyp eyr eys fee fef fem feo fep fer fes fey ffe fff ffm ffo ffp ffr ffs ffy fme fmf fmm fmo fmp fmr fms foe fof fom foo fop for fos foy fpe fpm fpo fpp fpr fps fpy fre frf frm fro frp frr frs fry fse fsf fsm fso fsp fsr fss fy- fye fyo fyp m-f m-o m-r mee mef mem meo mep mer mes mey mfe mff mfm mfo mfp mfr mfs mfy mme mmf mmm mmo mmp mmr mms moe mof mom moo mop mor mos moy mpe mpf mpm mpo mpp mpr mps mre mrf mrm mro mrp mrr mrs mry mse msf msm mso msp msr mss msy my- mye myf mym myo myr mys oee oef oem oeo oep oer oes oey of- ofe off ofm ofo ofp ofr ofs om- ome omf omm omo omp omr oms omy oo- oof oom ooo oop oor oos op- ope opf opm opo opp opr ops opy or- ore orf orm oro orp orr ors ory os- ose osf osm oso osp osr oss oye oyo oys p-p pee pef pem peo pep per pes pey pfe pff pfm pfo pfp pfr pfs pfy pme pmf pmm pmo pmp pmr pms poe pof pom poo pop por pos poy ppe ppf ppm ppo ppp ppr pps pre prf prm pro prp prr prs pry ps- pse psf psm pso psp psr pss psy py- pye pyf pym pyo pyr pys re- ree ref rem reo rep rer res rey rfe rff rfm rfo rfp rfr rfs rme rmf rmm rmo rmp rmr rms roe rof rom roo rop ror ros roy rpe rpf rpm rpo rpp rpr rps rrf rrm rrp rrr rrs rse rsf rsm rso rsp rsr rss ry- rye ryf rym ryo ryr rys ryy se- see sef sem seo sep ser ses sey sfe sff sfm sfo sfp sfr sfs sme smf smm smo smp smr sms smy soe sof som soo sop sor sos soy spe spf spm spo spp spr sps spy sr- sre srf srm sro srp srr srs sry ss- sse ssf ssm sso ssp ssr sss sy- sye sym syp syr sys yee yef yem yeo yep yer yes yey yfe yff yfm yfr yfs yme ymm ymo yms yoe yof yom yoo yop yor yos yoy ypf ypo yps yre yrf yro yrp yrs yse ysm yso ysp ysr yss ysy yye yyf yys yyy