effed fefed effed fefed ffeed ffeed efefd feefd eeffd eeffd feefd efefd efefd feefd eeffd eeffd feefd efefd ffeed ffeed fefed effed fefed effed effde fefde effde fefde ffede ffede efdfe fedfe edffe deffe fdefe dfefe efdfe fedfe edffe deffe fdefe dfefe ffdee ffdee fdfee dffee fdfee dffee efedf feedf eefdf eefdf feedf efedf efdef fedef edfef defef fdeef dfeef eedff eedff edeff deeff edeff deeff fedef efdef fdeef dfeef edfef defef efedf feedf eefdf eefdf feedf efedf efdef fedef edfef defef fdeef dfeef eedff eedff edeff deeff edeff deeff fedef efdef fdeef dfeef edfef defef ffede ffede fefde effde fefde effde ffdee ffdee fdfee dffee fdfee dffee fedfe efdfe fdefe dfefe edffe deffe fedfe efdfe fdefe dfefe edffe deffe
Note: these 'words' (valid or invalid) are all the permutations of the word effed. These words are obtained by scrambling the letters in effed.