ssbbe ssbbe sbsbe bssbe sbsbe bssbe ssbbe ssbbe sbsbe bssbe sbsbe bssbe sbbse bsbse sbbse bsbse bbsse bbsse sbbse bsbse sbbse bsbse bbsse bbsse ssbeb ssbeb sbseb bsseb sbseb bsseb ssebb ssebb sesbb essbb sesbb essbb sbesb bsesb sebsb esbsb bessb ebssb sbesb bsesb sebsb esbsb bessb ebssb ssbeb ssbeb sbseb bsseb sbseb bsseb ssebb ssebb sesbb essbb sesbb essbb sbesb bsesb sebsb esbsb bessb ebssb sbesb bsesb sebsb esbsb bessb ebssb sbbes bsbes sbbes bsbes bbses bbses sbebs bsebs sebbs esbbs besbs ebsbs sbebs bsebs sebbs esbbs besbs ebsbs bbess bbess bebss ebbss bebss ebbss sbbes bsbes sbbes bsbes bbses bbses sbebs bsebs sebbs esbbs besbs ebsbs sbebs bsebs sebbs esbbs besbs ebsbs bbess bbess bebss ebbss bebss ebbss
Note: these 'words' (valid or invalid) are all the permutations of the word ssbbe. These words are obtained by scrambling the letters in ssbbe.