bibes ibbes bbies bbies ibbes bibes biebs ibebs beibs ebibs iebbs eibbs bbeis bbeis bebis ebbis bebis ebbis ibebs biebs iebbs eibbs beibs ebibs bibse ibbse bbise bbise ibbse bibse bisbe ibsbe bsibe sbibe isbbe sibbe bbsie bbsie bsbie sbbie bsbie sbbie ibsbe bisbe isbbe sibbe bsibe sbibe biesb ibesb beisb ebisb iebsb eibsb biseb ibseb bsieb sbieb isbeb sibeb besib ebsib bseib sbeib esbib sebib iesbb eisbb isebb siebb esibb seibb bbesi bbesi bebsi ebbsi bebsi ebbsi bbsei bbsei bsbei sbbei bsbei sbbei besbi ebsbi bsebi sbebi esbbi sebbi besbi ebsbi bsebi sbebi esbbi sebbi ibesb biesb iebsb eibsb beisb ebisb ibseb biseb isbeb sibeb bsieb sbieb iesbb eisbb isebb siebb esibb seibb besib ebsib bseib sbeib esbib sebib
Note: these 'words' (valid or invalid) are all the permutations of the word bibes. These words are obtained by scrambling the letters in bibes.