gbsio bgsio gsbio sgbio bsgio sbgio gbiso bgiso gibso igbso bigso ibgso gsibo sgibo gisbo igsbo sigbo isgbo bsigo sbigo bisgo ibsgo sibgo isbgo gbsoi bgsoi gsboi sgboi bsgoi sbgoi gbosi bgosi gobsi ogbsi bogsi obgsi gsobi sgobi gosbi ogsbi sogbi osgbi bsogi sbogi bosgi obsgi sobgi osbgi gbios bgios gibos igbos bigos ibgos gbois bgois gobis ogbis bogis obgis giobs igobs goibs ogibs iogbs oigbs biogs ibogs boigs obigs iobgs oibgs gsiob sgiob gisob igsob sigob isgob gsoib sgoib gosib ogsib sogib osgib giosb igosb goisb ogisb iogsb oigsb siogb isogb soigb osigb iosgb oisgb bsiog sbiog bisog ibsog sibog isbog bsoig sboig bosig obsig sobig osbig biosg ibosg boisg obisg iobsg oibsg siobg isobg soibg osibg iosbg oisbg
Note: these 'words' (valid or invalid) are all the permutations of the word gbsio. These words are obtained by scrambling the letters in gbsio.