-er eee eeg eel eer eev eex ege egg egl egr egx ele elg ell elr elv elx ere erg erl err erv eve evg evl evr evv ex- exe exl exr exx ge- gee geg gel ger gev gex ggg ggr ggv gle glg gll glr glv glx gre grg grl grr grv grx gve gvg gvl gvr gxl lee leg lel ler lev lex lge lgg lgl lgr lgv lle llg lll llr llv lrg lrr lrv lve lvg lvl lvr lvv lvx lxr lxv lxx re- ree reg rel rer rev rex rge rgg rgr rgv rgx rle rlg rll rlr rrg rrl rrr rve rvg rvl rvr rvv rxr v-e vee veg vel ver vex vgg vgl vgr vgx vl- vle vll vlv vre vrg vrr vvg vvr vvv vxl vxr vxv xee xeg xel xer xev xex xge xgl xlg xlr xlv xrx xvg xvl xxl xxv xxx