-er -ey eee eef eem eeo eer eet eey ef- efe eff efm efo efr eft em- eme emf emm emo emr emt eo- eoe eof eom eoo eor eot ere erf erm ero err ert ery ete etf etm eto etr ett ety eye eym eyo eyr eyt fee fef fem feo fer fet fey ffe fff ffm ffo ffr fft ffy fme fmf fmm fmo fmr fmt foe fof fom foo for fot foy fre frf frm fro frr frt fry fte ftf ftm fto ftr ftt fty fy- fye fyo m-f m-o m-r mee mef mem meo mer met mey mfe mff mfm mfo mfr mft mfy mme mmf mmm mmo mmr mmt moe mof mom moo mor mot moy mre mrf mrm mro mrr mrt mry mte mtf mtm mto mtr mtt my- mye myf mym myo myr myt oee oef oem oeo oer oet oey of- ofe off ofm ofo ofr oft om- ome omf omm omo omr omt omy oo- oof oom ooo oor oot or- ore orf orm oro orr ort ory ot- ote otf otm oto otr ott oye oyo re- ree ref rem reo rer ret rey rfe rff rfm rfo rfr rft rme rmf rmm rmo rmr rmt roe rof rom roo ror rot roy rrf rrm rrr rrt rte rtf rtm rto rtr rtt rty ry- rye ryf rym ryo ryr ryy te- tee tef tem teo ter tet tey tfe tff tfm tfo tfr tft tme tmf tmm tmo tmr tmt tmy to- toe tof tom too tor tot toy tre trf trm tro trr trt try tte ttf ttm tto ttr ttt tty tye tyf tym tyo tyr tyt yee yef yem yeo yer yet yey yfe yff yfm yfr yft yme ymm ymo ymt yoe yof yom yoo yor yot yoy yre yrf yro yrt yte ytf ytm yto ytr ytt yye yyf yyt yyy