imsrg misrg ismrg simrg msirg smirg imrsg mirsg irmsg rimsg mrisg rmisg isrmg sirmg irsmg rismg srimg rsimg msrig smrig mrsig rmsig srmig rsmig imsgr misgr ismgr simgr msigr smigr imgsr migsr igmsr gimsr mgisr gmisr isgmr sigmr igsmr gismr sgimr gsimr msgir smgir mgsir gmsir sgmir gsmir imrgs mirgs irmgs rimgs mrigs rmigs imgrs migrs igmrs gimrs mgirs gmirs irgms rigms igrms girms rgims grims mrgis rmgis mgris gmris rgmis grmis isrgm sirgm irsgm risgm srigm rsigm isgrm sigrm igsrm gisrm sgirm gsirm irgsm rigsm igrsm girsm rgism grism srgim rsgim sgrim gsrim rgsim grsim msrgi smrgi mrsgi rmsgi srmgi rsmgi msgri smgri mgsri gmsri sgmri gsmri mrgsi rmgsi mgrsi gmrsi rgmsi grmsi srgmi rsgmi sgrmi gsrmi rgsmi grsmi
Note: these 'words' (valid or invalid) are all the permutations of the word imsrg. These words are obtained by scrambling the letters in imsrg.