buffo ubffo bfufo fbufo ufbfo fubfo buffo ubffo bfufo fbufo ufbfo fubfo bffuo fbfuo bffuo fbfuo ffbuo ffbuo uffbo fufbo uffbo fufbo ffubo ffubo bufof ubfof bfuof fbuof ufbof fubof buoff uboff bouff obuff uobff oubff bfouf fbouf bofuf obfuf fobuf ofbuf ufobf fuobf uofbf oufbf foubf ofubf bufof ubfof bfuof fbuof ufbof fubof buoff uboff bouff obuff uobff oubff bfouf fbouf bofuf obfuf fobuf ofbuf ufobf fuobf uofbf oufbf foubf ofubf bffou fbfou bffou fbfou ffbou ffbou bfofu fbofu boffu obffu fobfu ofbfu bfofu fbofu boffu obffu fobfu ofbfu ffobu ffobu fofbu offbu fofbu offbu uffob fufob uffob fufob ffuob ffuob ufofb fuofb uoffb ouffb foufb ofufb ufofb fuofb uoffb ouffb foufb ofufb ffoub ffoub fofub offub fofub offub
Note: these 'words' (valid or invalid) are all the permutations of the word buffo. These words are obtained by scrambling the letters in buffo.