grise rgise girse igrse rigse irgse grsie rgsie gsrie sgrie rsgie srgie gisre igsre gsire sgire isgre sigre risge irsge rsige srige isrge sirge gries rgies gires igres riges irges greis rgeis geris egris regis ergis giers igers geirs egirs iegrs eigrs riegs iregs reigs erigs iergs eirgs grsei rgsei gsrei sgrei rsgei srgei gresi rgesi gersi egrsi regsi ergsi gseri sgeri gesri egsri segri esgri rsegi sregi resgi ersgi sergi esrgi giser igser gsier sgier isger siger giesr igesr geisr egisr iegsr eigsr gseir sgeir gesir egsir segir esgir isegr siegr iesgr eisgr seigr esigr riseg irseg rsieg srieg isreg sireg riesg iresg reisg erisg iersg eirsg rseig sreig resig ersig serig esrig iserg sierg iesrg eisrg seirg esirg
Note: these 'words' (valid or invalid) are all the permutations of the word grise. These words are obtained by scrambling the letters in grise.