-er eee eem eeo eer eev eie eii eim eio eir eiv em- eme emi emm emo emr emv eo- eoe eoi eom eoo eor ere eri erm ero err erv eve evi evm evo evr evv i-v ie- iee iei iem ier iev iie iii iim iio iir im- ime imi imm imo imv io- ioe ioi iom ioo ior iov ir- ire iri irm iro irr irv ive ivi ivo ivr ivv m-o m-r m-v mee mei mem meo mer mev mi- mie mii mim mio mir miv mme mmi mmm mmo mmr mmv moe moi mom moo mor mov mre mri mrm mro mrr mrv mve mvi mvm mvo mvr mvv o-i oee oei oem oeo oer oie oii oim oio oir oiv om- ome omi omm omo omr omv oo- ooi oom ooo oor oov or- ore ori orm oro orr orv ov- ove ovi ovo ovv re- ree rei rem reo rer rev rie rii rim rio rir riv rme rmi rmm rmo rmr rmv roe roi rom roo ror rov rri rrm rrr rve rvi rvm rvo rvr rvv v-e vee vei vem veo ver vi- vie vii vim vio vir viv vm- vmi vmm vmo vmr voe voi vom voo vor vov vre vri vrm vrr vvi vvm vvo vvr vvv