-er -ol eee eel eeo eer eev eex ele ell elo elr elv elx eo- eoe eol eoo eor ere erl ero err erv eve evl evo evr evv ex- exe exl exo exr exx lee lel leo ler lev lex lle lll llo llr llv loe lol loo lor lov lox lro lrr lrv lve lvl lvr lvv lvx lxo lxr lxv lxx oee oel oeo oer oex ole oll olo oo- ool ooo oor oov oox or- ore orl oro orr orv orx ov- ove ovl ovo ovv ox- oxo oxx re- ree rel reo rer rev rex rle rll rlo rlr roe rol roo ror rov rox rrl rrr rve rvl rvo rvr rvv rxr v-e vee vel veo ver vex vl- vle vll vlo vlv voe vol voo vor vov vox vre vrr vvo vvr vvv vxl vxr vxv xee xel xer xev xex xlr xlv xoo xor xov xox xrx xvl xxl xxo xxv xxx