-ene dddd ddre dedd dede dedu deed deen deer dene denn denu der- dere dern derr deue deur deux dex- dexe dner dred dree dren drue druu dudd dude dudu duer dune dunn dure durn duru duur dxdr dxed dxnd dxnu dxrd dxre dxrr dxrx dxue dxur dxxr dxxx edde ede- eden eder edex edrn edru edun edur eede eedu eeee eend end- ende endu ened enee ener enne ennu enue enur er-x erde ered eren erer erne erre erur eude euer eur- eure exed exen exer exrx ndde nder ndre nedd nede nedu need neen neer nend nene nenu nerd nere nerr neru neue neun neur neuu nexe nexx nnnn nren nrrd nudd nude nuee nuer nune nunn nurd nure nurn nurr nuru nxdn rder redd rede redr redu redx reed reen rend rene renn renu rerd rere reru reue reuu reux rexx rred rrrr rrun rudd rude rued ruen ruer rund rune runn rurd rure ruru ruud ruun uden uder udun uend unde uned unee unen uner unne urde urdu ure- ured urex urne urre urun urur uuen uuuu uxue x-ed xeer xen- xene xenn xenu xer- xexe xnee xuxu xxxx