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