grids rgids girds igrds rigds irgds grdis rgdis gdris dgris rdgis drgis gidrs igdrs gdirs dgirs idgrs digrs ridgs irdgs rdigs drigs idrgs dirgs grisd rgisd girsd igrsd rigsd irgsd grsid rgsid gsrid sgrid rsgid srgid gisrd igsrd gsird sgird isgrd sigrd risgd irsgd rsigd srigd isrgd sirgd grdsi rgdsi gdrsi dgrsi rdgsi drgsi grsdi rgsdi gsrdi sgrdi rsgdi srgdi gdsri dgsri gsdri sgdri dsgri sdgri rdsgi drsgi rsdgi srdgi dsrgi sdrgi gidsr igdsr gdisr dgisr idgsr digsr gisdr igsdr gsidr sgidr isgdr sigdr gdsir dgsir gsdir sgdir dsgir sdgir idsgr disgr isdgr sidgr dsigr sdigr ridsg irdsg rdisg drisg idrsg dirsg risdg irsdg rsidg sridg isrdg sirdg rdsig drsig rsdig srdig dsrig sdrig idsrg disrg isdrg sidrg dsirg sdirg
Note: these 'words' (valid or invalid) are all the permutations of the word grids. These words are obtained by scrambling the letters in grids.