-ey eee eef eem eeo ees eet eey ef- efe eff efm efo efs eft em- eme emf emm emo ems emt eo- eoe eof eom eoo eos eot es- ese esf esm eso ess est esy ete etf etm eto ets ett ety eye eym eyo eys eyt fee fef fem feo fes fet fey ffe fff ffm ffo ffs fft ffy fme fmf fmm fmo fms fmt foe fof fom foo fos fot foy fse fsf fsm fso fss fst fte ftf ftm fto fts ftt fty fy- fye fyo m-f m-o mee mef mem meo mes met mey mfe mff mfm mfo mfs mft mfy mme mmf mmm mmo mms mmt moe mof mom moo mos mot moy mse msf msm mso mss mst msy mte mtf mtm mto mts mtt my- mye myf mym myo mys myt oee oef oem oeo oes oet oey of- ofe off ofm ofo ofs oft om- ome omf omm omo oms omt omy oo- oof oom ooo oos oot os- ose osf osm oso oss ost ot- ote otf otm oto ots ott oye oyo oys se- see sef sem seo ses set sey sfe sff sfm sfo sfs sft sme smf smm smo sms smt smy soe sof som soo sos sot soy ss- sse ssf ssm sso sss sst ste stf stm sto sts stt sty sy- sye sym sys syt te- tee tef tem teo tes tet tey tfe tff tfm tfo tfs tft tme tmf tmm tmo tms tmt tmy to- toe tof tom too tos tot toy tse tsf tsm tso tss tst tsy tte ttf ttm tto tts ttt tty tye tyf tym tyo tys tyt yee yef yem yeo yes yet yey yfe yff yfm yfs yft yme ymm ymo yms ymt yoe yof yom yoo yos yot yoy yse ysm yso yss yst ysy yte ytf ytm yto yts ytt yye yyf yys yyt yyy