msbir smbir mbsir bmsir sbmir bsmir msibr smibr misbr imsbr simbr ismbr mbisr bmisr mibsr imbsr bimsr ibmsr sbimr bsimr sibmr isbmr bismr ibsmr msbri smbri mbsri bmsri sbmri bsmri msrbi smrbi mrsbi rmsbi srmbi rsmbi mbrsi bmrsi mrbsi rmbsi brmsi rbmsi sbrmi bsrmi srbmi rsbmi brsmi rbsmi msirb smirb misrb imsrb simrb ismrb msrib smrib mrsib rmsib srmib rsmib mirsb imrsb mrisb rmisb irmsb rimsb sirmb isrmb srimb rsimb irsmb rismb mbirs bmirs mibrs imbrs bimrs ibmrs mbris bmris mrbis rmbis brmis rbmis mirbs imrbs mribs rmibs irmbs rimbs birms ibrms brims rbims irbms ribms sbirm bsirm sibrm isbrm bisrm ibsrm sbrim bsrim srbim rsbim brsim rbsim sirbm isrbm sribm rsibm irsbm risbm birsm ibrsm brism rbism irbsm ribsm
Note: these 'words' (valid or invalid) are all the permutations of the word msbir. These words are obtained by scrambling the letters in msbir.