reedc eredc reedc eredc eerdc eerdc redec erdec rdeec dreec edrec derec redec erdec rdeec dreec edrec derec eedrc eedrc ederc deerc ederc deerc reecd erecd reecd erecd eercd eercd reced erced rceed creed ecred cered reced erced rceed creed ecred cered eecrd eecrd ecerd ceerd ecerd ceerd redce erdce rdece drece edrce derce recde ercde rcede crede ecrde cerde rdcee drcee rcdee crdee dcree cdree edcre decre ecdre cedre dcere cdere redce erdce rdece drece edrce derce recde ercde rcede crede ecrde cerde rdcee drcee rcdee crdee dcree cdree edcre decre ecdre cedre dcere cdere eedcr eedcr edecr deecr edecr deecr eecdr eecdr ecedr ceedr ecedr ceedr edcer decer ecder ceder dceer cdeer edcer decer ecder ceder dceer cdeer
Note: these 'words' (valid or invalid) are all the permutations of the word reedc. These words are obtained by scrambling the letters in reedc.