ilysb liysb iylsb yilsb lyisb ylisb ilsyb lisyb islyb silyb lsiyb sliyb iyslb yislb isylb siylb ysilb syilb lysib ylsib lsyib slyib yslib sylib ilybs liybs iylbs yilbs lyibs ylibs ilbys libys iblys bilys lbiys bliys iybls yibls ibyls biyls ybils byils lybis ylbis lbyis blyis yblis bylis ilsby lisby islby silby lsiby sliby ilbsy libsy iblsy bilsy lbisy blisy isbly sibly ibsly bisly sbily bsily lsbiy slbiy lbsiy blsiy sbliy bsliy iysbl yisbl isybl siybl ysibl syibl iybsl yibsl ibysl biysl ybisl byisl isbyl sibyl ibsyl bisyl sbiyl bsiyl ysbil sybil ybsil bysil sbyil bsyil lysbi ylsbi lsybi slybi yslbi sylbi lybsi ylbsi lbysi blysi yblsi bylsi lsbyi slbyi lbsyi blsyi sblyi bslyi ysbli sybli ybsli bysli sbyli bsyli
Note: these 'words' (valid or invalid) are all the permutations of the word ilysb. These words are obtained by scrambling the letters in ilysb.