-ey eee eem een eeo eex eey em- eme emm emn emo emx en- ene enm enn eno eny eo- eoe eom eon eoo ex- exe exo exx exy eye eym eyn eyo m-o mee mem men meo mex mey mme mmm mmn mmo mmx mne mnm mnn mno moe mom mon moo mox moy mxn my- mye mym myn myo myx ne- nee nem nen neo nex ney nme nmm nmn nmo nne nnm nnn nno no- noe nom non noo nox noy nye nym nyn nyo nyx nyy oee oem oen oeo oex oey om- ome omm omn omo omx omy on- one onn ono onx ony oo- oom oon ooo oox ox- oxn oxo oxx oxy oye oyo xee xem xen xex xmm xmo xmx xno xom xon xoo xox xxo xxx xxy xyy yee yem yen yeo yex yey yme ymm ymo yne ynn yny yoe yom yon yoo yox yoy yxe yxy yye yyy