sdxe dsxe sxde xsde dxse xdse sdex dsex sedx esdx desx edsx sxed xsed sexd esxd xesd exsd dxes xdes dexs edxs xeds exds
Note: these 'words' (valid or invalid) are all the permutations of the word sdxe. These words are obtained by scrambling the letters in sdxe.