-er -ey eee eem een eeo eer eex eey em- eme emm emn emo emr emx en- ene enm enn eno enr eny eo- eoe eom eon eoo eor ere erm ern ero err ery ex- exe exo exr exx exy eye eym eyn eyo eyr m-o m-r mee mem men meo mer mex mey mme mmm mmn mmo mmr mmx mne mnm mnn mno mnr moe mom mon moo mor mox moy mre mrm mrn mro mrr mrx mry mxn mxr my- mye mym myn myo myr myx ne- nee nem nen neo ner nex ney nme nmm nmn nmo nmr nne nnm nnn nno no- noe nom non noo nor nox noy nre nrm nrn nro nrr nrx nry nye nym nyn nyo nyx nyy oee oem oen oeo oer oex oey om- ome omm omn omo omr omx omy on- one onn ono onr onx ony oo- oom oon ooo oor oox or- ore orm orn oro orr orx ory ox- oxn oxo oxx oxy oye oyo re- ree rem ren reo rer rex rey rme rmm rmn rmo rmr rmx rnm rnn rno rnr rny roe rom ron roo ror rox roy rrm rrn rrr rxr ry- rye rym ryn ryo ryr ryy xee xem xen xer xex xmm xmo xmr xmx xno xom xon xoo xor xox xrx xry xxo xxx xxy xyr xyy yee yem yen yeo yer yex yey yme ymm ymo yne ynn yny yoe yom yon yoo yor yox yoy yre yrn yro yxe yxy yye yyy