tsweb stweb twseb wtseb swteb wsteb tsewb stewb teswb etswb setwb estwb twesb wtesb tewsb etwsb wetsb ewtsb swetb wsetb sewtb eswtb westb ewstb tswbe stwbe twsbe wtsbe swtbe wstbe tsbwe stbwe tbswe btswe sbtwe bstwe twbse wtbse tbwse btwse wbtse bwtse swbte wsbte sbwte bswte wbste bwste tsebw stebw tesbw etsbw setbw estbw tsbew stbew tbsew btsew sbtew bstew tebsw etbsw tbesw btesw ebtsw betsw sebtw esbtw sbetw bsetw ebstw bestw twebs wtebs tewbs etwbs wetbs ewtbs twbes wtbes tbwes btwes wbtes bwtes tebws etbws tbews btews ebtws betws webts ewbts wbets bwets ebwts bewts swebt wsebt sewbt eswbt wesbt ewsbt swbet wsbet sbwet bswet wbset bwset sebwt esbwt sbewt bsewt ebswt beswt webst ewbst wbest bwest ebwst bewst
Note: these 'words' (valid or invalid) are all the permutations of the word tsweb. These words are obtained by scrambling the letters in tsweb.