cists icsts csits scits iscts sicts citss ictss ctiss tciss itcss ticss cstis sctis ctsis tcsis stcis tscis istcs sitcs itscs tiscs stics tsics cisst icsst csist scist iscst sicst cisst icsst csist scist iscst sicst cssit scsit cssit scsit sscit sscit issct sisct issct sisct ssict ssict citss ictss ctiss tciss itcss ticss cists icsts csits scits iscts sicts ctsis tcsis cstis sctis tscis stcis itscs tiscs istcs sitcs tsics stics cstsi sctsi ctssi tcssi stcsi tscsi cssti scsti cssti scsti sscti sscti ctssi tcssi cstsi sctsi tscsi stcsi stsci tssci sstci sstci tssci stsci istsc sitsc itssc tissc stisc tsisc isstc sistc isstc sistc ssitc ssitc itssc tissc istsc sitsc tsisc stisc stsic tssic sstic sstic tssic stsic
Note: these 'words' (valid or invalid) are all the permutations of the word cists. These words are obtained by scrambling the letters in cists.