ednrd denrd endrd nedrd dnerd nderd edrnd dernd erdnd rednd drend rdend enrdd nerdd erndd rendd nredd rnedd dnred ndred drned rdned nrded rnded edndr dendr enddr neddr dnedr ndedr eddnr dednr eddnr dednr ddenr ddenr enddr neddr edndr dendr ndedr dnedr dnder ndder ddner ddner ndder dnder edrdn derdn erddn reddn dredn rdedn eddrn dedrn eddrn dedrn ddern ddern erddn reddn edrdn derdn rdedn dredn drden rdden ddren ddren rdden drden enrdd nerdd erndd rendd nredd rnedd endrd nedrd ednrd denrd nderd dnerd erdnd rednd edrnd dernd rdend drend nrded rnded ndred dnred rdned drned dnrde ndrde drnde rdnde nrdde rndde dndre nddre ddnre ddnre nddre dndre drdne rddne ddrne ddrne rddne drdne nrdde rndde ndrde dnrde rdnde drnde
Note: these 'words' (valid or invalid) are all the permutations of the word ednrd. These words are obtained by scrambling the letters in ednrd.