blook lbook bolok oblok lobok olbok blook lbook bolok oblok lobok olbok boolk obolk boolk obolk ooblk ooblk loobk olobk loobk olobk oolbk oolbk bloko lboko bolko oblko lobko olbko blkoo lbkoo bkloo kbloo lkboo klboo boklo obklo bkolo kbolo okblo koblo lokbo olkbo lkobo klobo oklbo kolbo bloko lboko bolko oblko lobko olbko blkoo lbkoo bkloo kbloo lkboo klboo boklo obklo bkolo kbolo okblo koblo lokbo olkbo lkobo klobo oklbo kolbo bookl obokl bookl obokl oobkl oobkl bokol obkol bkool kbool okbol kobol bokol obkol bkool kbool okbol kobol ookbl ookbl okobl koobl okobl koobl lookb olokb lookb olokb oolkb oolkb lokob olkob lkoob kloob oklob kolob lokob olkob lkoob kloob oklob kolob ooklb ooklb okolb koolb okolb koolb
Note: these 'words' (valid or invalid) are all the permutations of the word blook. These words are obtained by scrambling the letters in blook.