-ene dddd ddre dedd dede deed deen deer deet dene denn dent der- dere dern derr dete detn detr dex- dexe dext dner dnet dntt dred dree dren dret dted dten dttx dtxt dxdr dxed dxnd dxrd dxre dxrr dxrt dxrx dxxr dxxx edde ede- eden eder edex edrn eede eeee eend eent eete eext end- ende ened enee ener enne ent- entd ente entr er-x erde ered eren erer eret erne erre etee eten eter etne etnr etre ette ettn exed exen exer exrx exte extr ndde nder ndnt ndre nedd nede need neen neer neet nend nene nent nerd nere nerr nert net- netd nete nett nexe next nexx nnnn nntn nren nrrd nter ntnd nttr nxdn rder redd rede redr redx reed reen reet rend rene renn rent rerd rere rert retd rete retr rett rexx rnnt rntd rred rrrr rtdt rtee rtex rtnd tedd tede tedx teed teen teer teet tend tene tenn tent ter- tere tern terr tete tetr tett tetx text tndd tre- tred tree tren tret trex trte trtr tten tter tttt txen txtr x-ed xeer xen- xene xenn xer- xert xexe xnee xnet xtnd xxxx