buffy ubffy bfufy fbufy ufbfy fubfy buffy ubffy bfufy fbufy ufbfy fubfy bffuy fbfuy bffuy fbfuy ffbuy ffbuy uffby fufby uffby fufby ffuby ffuby bufyf ubfyf bfuyf fbuyf ufbyf fubyf buyff ubyff byuff ybuff uybff yubff bfyuf fbyuf byfuf ybfuf fybuf yfbuf ufybf fuybf uyfbf yufbf fyubf yfubf bufyf ubfyf bfuyf fbuyf ufbyf fubyf buyff ubyff byuff ybuff uybff yubff bfyuf fbyuf byfuf ybfuf fybuf yfbuf ufybf fuybf uyfbf yufbf fyubf yfubf bffyu fbfyu bffyu fbfyu ffbyu ffbyu bfyfu fbyfu byffu ybffu fybfu yfbfu bfyfu fbyfu byffu ybffu fybfu yfbfu ffybu ffybu fyfbu yffbu fyfbu yffbu uffyb fufyb uffyb fufyb ffuyb ffuyb ufyfb fuyfb uyffb yuffb fyufb yfufb ufyfb fuyfb uyffb yuffb fyufb yfufb ffyub ffyub fyfub yffub fyfub yffub
Note: these 'words' (valid or invalid) are all the permutations of the word buffy. These words are obtained by scrambling the letters in buffy.