boils obils biols ibols oibls iobls bolis oblis blois lbois olbis lobis bilos iblos blios lbios ilbos libos oilbs iolbs olibs loibs ilobs liobs boisl obisl biosl ibosl oibsl iobsl bosil obsil bsoil sboil osbil sobil bisol ibsol bsiol sbiol isbol sibol oisbl iosbl osibl soibl isobl siobl bolsi oblsi blosi lbosi olbsi lobsi bosli obsli bsoli sboli osbli sobli blsoi lbsoi bsloi sbloi lsboi slboi olsbi losbi oslbi solbi lsobi slobi bilso iblso bliso lbiso ilbso libso bislo ibslo bsilo sbilo isblo siblo blsio lbsio bslio sblio lsbio slbio ilsbo lisbo islbo silbo lsibo slibo oilsb iolsb olisb loisb ilosb liosb oislb ioslb osilb soilb isolb siolb olsib losib oslib solib lsoib sloib ilsob lisob islob silob lsiob sliob
Note: these 'words' (valid or invalid) are all the permutations of the word boils. These words are obtained by scrambling the letters in boils.