lnbok nlbok lbnok blnok nblok bnlok lnobk nlobk lonbk olnbk nolbk onlbk lbonk blonk lobnk olbnk bolnk oblnk nbolk bnolk noblk onblk bonlk obnlk lnbko nlbko lbnko blnko nblko bnlko lnkbo nlkbo lknbo klnbo nklbo knlbo lbkno blkno lkbno klbno bklno kblno nbklo bnklo nkblo knblo bknlo kbnlo lnokb nlokb lonkb olnkb nolkb onlkb lnkob nlkob lknob klnob nklob knlob loknb olknb lkonb klonb oklnb kolnb noklb onklb nkolb knolb oknlb konlb lbokn blokn lobkn olbkn bolkn oblkn lbkon blkon lkbon klbon bklon kblon lokbn olkbn lkobn klobn oklbn kolbn bokln obkln bkoln kboln okbln kobln nbokl bnokl nobkl onbkl bonkl obnkl nbkol bnkol nkbol knbol bknol kbnol nokbl onkbl nkobl knobl oknbl konbl boknl obknl bkonl kbonl okbnl kobnl
Note: these 'words' (valid or invalid) are all the permutations of the word lnbok. These words are obtained by scrambling the letters in lnbok.