buffs ubffs bfufs fbufs ufbfs fubfs buffs ubffs bfufs fbufs ufbfs fubfs bffus fbfus bffus fbfus ffbus ffbus uffbs fufbs uffbs fufbs ffubs ffubs bufsf ubfsf bfusf fbusf ufbsf fubsf busff ubsff bsuff sbuff usbff subff bfsuf fbsuf bsfuf sbfuf fsbuf sfbuf ufsbf fusbf usfbf sufbf fsubf sfubf bufsf ubfsf bfusf fbusf ufbsf fubsf busff ubsff bsuff sbuff usbff subff bfsuf fbsuf bsfuf sbfuf fsbuf sfbuf ufsbf fusbf usfbf sufbf fsubf sfubf bffsu fbfsu bffsu fbfsu ffbsu ffbsu bfsfu fbsfu bsffu sbffu fsbfu sfbfu bfsfu fbsfu bsffu sbffu fsbfu sfbfu ffsbu ffsbu fsfbu sffbu fsfbu sffbu uffsb fufsb uffsb fufsb ffusb ffusb ufsfb fusfb usffb suffb fsufb sfufb ufsfb fusfb usffb suffb fsufb sfufb ffsub ffsub fsfub sffub fsfub sffub
Note: these 'words' (valid or invalid) are all the permutations of the word buffs. These words are obtained by scrambling the letters in buffs.