booky oboky booky oboky oobky oobky bokoy obkoy bkooy kbooy okboy koboy bokoy obkoy bkooy kbooy okboy koboy ookby ookby okoby kooby okoby kooby booyk oboyk booyk oboyk oobyk oobyk boyok obyok byook ybook oybok yobok boyok obyok byook ybook oybok yobok ooybk ooybk oyobk yoobk oyobk yoobk bokyo obkyo bkoyo kboyo okbyo kobyo boyko obyko byoko yboko oybko yobko bkyoo kbyoo bykoo ybkoo kyboo ykboo okybo koybo oykbo yokbo kyobo ykobo bokyo obkyo bkoyo kboyo okbyo kobyo boyko obyko byoko yboko oybko yobko bkyoo kbyoo bykoo ybkoo kyboo ykboo okybo koybo oykbo yokbo kyobo ykobo ookyb ookyb okoyb kooyb okoyb kooyb ooykb ooykb oyokb yookb oyokb yookb okyob koyob oykob yokob kyoob ykoob okyob koyob oykob yokob kyoob ykoob
Note: these 'words' (valid or invalid) are all the permutations of the word booky. These words are obtained by scrambling the letters in booky.