dibbs idbbs dbibs bdibs ibdbs bidbs dibbs idbbs dbibs bdibs ibdbs bidbs dbbis bdbis dbbis bdbis bbdis bbdis ibbds bibds ibbds bibds bbids bbids dibsb idbsb dbisb bdisb ibdsb bidsb disbb idsbb dsibb sdibb isdbb sidbb dbsib bdsib dsbib sdbib bsdib sbdib ibsdb bisdb isbdb sibdb bsidb sbidb dibsb idbsb dbisb bdisb ibdsb bidsb disbb idsbb dsibb sdibb isdbb sidbb dbsib bdsib dsbib sdbib bsdib sbdib ibsdb bisdb isbdb sibdb bsidb sbidb dbbsi bdbsi dbbsi bdbsi bbdsi bbdsi dbsbi bdsbi dsbbi sdbbi bsdbi sbdbi dbsbi bdsbi dsbbi sdbbi bsdbi sbdbi bbsdi bbsdi bsbdi sbbdi bsbdi sbbdi ibbsd bibsd ibbsd bibsd bbisd bbisd ibsbd bisbd isbbd sibbd bsibd sbibd ibsbd bisbd isbbd sibbd bsibd sbibd bbsid bbsid bsbid sbbid bsbid sbbid
Note: these 'words' (valid or invalid) are all the permutations of the word dibbs. These words are obtained by scrambling the letters in dibbs.