isbas sibas ibsas bisas sbias bsias isabs siabs iasbs aisbs saibs asibs ibass biass iabss aibss baiss abiss sbais bsais sabis asbis basis absis isbsa sibsa ibssa bissa sbisa bsisa issba sisba issba sisba ssiba ssiba ibssa bissa isbsa sibsa bsisa sbisa sbsia bssia ssbia ssbia bssia sbsia isasb siasb iassb aissb saisb asisb issab sisab issab sisab ssiab ssiab iassb aissb isasb siasb asisb saisb sasib assib ssaib ssaib assib sasib ibass biass iabss aibss baiss abiss ibsas bisas isbas sibas bsias sbias iasbs aisbs isabs siabs asibs saibs basis absis bsais sbais asbis sabis sbasi bsasi sabsi asbsi bassi abssi sbsai bssai ssbai ssbai bssai sbsai sasbi assbi ssabi ssabi assbi sasbi bassi abssi bsasi sbasi asbsi sabsi
Note: these 'words' (valid or invalid) are all the permutations of the word isbas. These words are obtained by scrambling the letters in isbas.