-ene dddd ddre dedd dede dedu deed deen deer deet dene denn dent denu der- dere dern derr dete detn detr deue deur deut dner dnet dntt dnut dred dree dren dret drue drut druu dted dten dudd dude dudu duer duet dune dunn dunt dure durn durt duru dute duur duut edde ede- eden eder edrn edru edun edur eede eedu eeee eend eent eete eetu end- ende endu ened enee ener enne ennu ent- entd ente entr enue enur enut erde ered eren erer eret erne erre ertu erur etee eten eter etne etnr etre ette ettn ettu etun eude euer eur- eure eurt ndde nder ndnt ndre ndut nedd nede nedu need neen neer neet nend nene nent nenu nerd nere nerr nert neru net- netd nete nett neue neun neur neut neuu nnnn nntn nren nrrd nter nteu ntnd ntnu ntru nttr nudd nude nuee nuer nune nunn nunt nurd nure nurn nurr nurt nuru nute nutt nutu rder redd rede redr redu reed reen reet rend rene renn rent renu rerd rere rert reru retd rete retr rett reue reut reuu rnnt rntd rnut rred rrrr rrun rtdt rtee rtnd rudd rude rued ruen ruer ruet rund rune runn runt rurd rure ruru rute rutt rutu ruud ruun tedd tede teed teen teer teet tend tene tenn tent tenu ter- tere tern terr teru tete tetr tett tetu teut tndd tnut tre- tred tree tren tret treu trte trtr trud true trun trut truu tten tter tttt tude tudu tuen tuer tuet tund tune tunn tunu turd ture turn turr turt turu tute tutt tutu uden uder udet udun uend unde uned unee unen uner unne unte unut urde urdu ure- ured uret urne urre urte urun urur urut uter utne uttu uuen uuuu