basto absto bsato sbato asbto sabto batso abtso btaso tbaso atbso tabso bstao sbtao btsao tbsao stbao tsbao astbo satbo atsbo tasbo stabo tsabo basot absot bsaot sbaot asbot sabot baost abost boast obast aobst oabst bsoat sboat bosat obsat sobat osbat asobt saobt aosbt oasbt soabt osabt batos abtos btaos tbaos atbos tabos baots abots boats obats aobts oabts btoas tboas botas obtas tobas otbas atobs taobs aotbs oatbs toabs otabs bstoa sbtoa btsoa tbsoa stboa tsboa bsota sbota bosta obsta sobta osbta btosa tbosa botsa obtsa tobsa otbsa stoba tsoba sotba ostba tosba otsba astob satob atsob tasob staob tsaob asotb saotb aostb oastb soatb osatb atosb taosb aotsb oatsb toasb otasb stoab tsoab sotab ostab tosab otsab
Note: these 'words' (valid or invalid) are all the permutations of the word basto. These words are obtained by scrambling the letters in basto.