-er eee eeg eem eer eex ege egg egi egm egr egx eie eig eii eim eir eix em- eme emg emi emm emr emx ere erg eri erm err ex- exe exi exr exx ge- gee geg gei gem ger gex ggg ggi ggm ggr gie gig gii gim gir gme gmg gmi gmm gmr gmx gre grg gri grm grr grx ie- iee ieg iei iem ier iex ige igg igi igm igr iie iii iim iir iix im- ime img imi imm imx ir- ire irg iri irm irr irx ixe ixi m-r mee meg mei mem mer mex mge mgi mgm mgr mgx mi- mie mig mii mim mir mix mme mmg mmi mmm mmr mmx mre mrg mri mrm mrr mrx mxi mxr re- ree reg rei rem rer rex rge rgg rgi rgr rgx rie rig rii rim rir rix rme rmg rmi rmm rmr rmx rrg rri rrm rrr rxr xee xeg xem xer xex xge xgi xie xii xix xmg xmi xmm xmr xmx xrx xxi xxx