-ene eeee emen emer emeu emex emme emmu emne emre enee enem ener enne ennu enue enum enur er-x erem eren erer erme erne erre erum erur euer eur- eure exen exer exmr exrx exum meem meen meer meme memr memu memx men- mene menn menu mer- mere merm mern meru meum meux mexx mmen mmmm mmun mmxx mnem mree mren muee mume mumm mumu mune munn munu mure murn murr muru muxe muxu neem neen neer nem- neme nemn nemu nene nenu nere nerm nerr neru neue neum neun neur neuu nexe nexx nm-e nmex nmrx nnnn nrem nren nuee nuer nume numm numu nune nunn nure nurn nurr nuru reem reen reme remn rene renn renu rere reru reue reuu reux rexx rrrr rrum rrun ruen ruer rume rumm rune runn rure ruru ruun umer unee unen uner unmr unne unum ure- urex urne urre urum urun urur uuen uuuu uxem uxue xeer xeme xemu xen- xene xenn xenu xer- xexe xmen xnee xuxu xxxx