boofy obofy boofy obofy oobfy oobfy bofoy obfoy bfooy fbooy ofboy foboy bofoy obfoy bfooy fbooy ofboy foboy oofby oofby ofoby fooby ofoby fooby booyf oboyf booyf oboyf oobyf oobyf boyof obyof byoof yboof oybof yobof boyof obyof byoof yboof oybof yobof ooybf ooybf oyobf yoobf oyobf yoobf bofyo obfyo bfoyo fboyo ofbyo fobyo boyfo obyfo byofo ybofo oybfo yobfo bfyoo fbyoo byfoo ybfoo fyboo yfboo ofybo foybo oyfbo yofbo fyobo yfobo bofyo obfyo bfoyo fboyo ofbyo fobyo boyfo obyfo byofo ybofo oybfo yobfo bfyoo fbyoo byfoo ybfoo fyboo yfboo ofybo foybo oyfbo yofbo fyobo yfobo oofyb oofyb ofoyb fooyb ofoyb fooyb ooyfb ooyfb oyofb yoofb oyofb yoofb ofyob foyob oyfob yofob fyoob yfoob ofyob foyob oyfob yofob fyoob yfoob
Note: these 'words' (valid or invalid) are all the permutations of the word boofy. These words are obtained by scrambling the letters in boofy.