mrlib rmlib mlrib lmrib rlmib lrmib mrilb rmilb mirlb imrlb rimlb irmlb mlirb lmirb milrb imlrb limrb ilmrb rlimb lrimb rilmb irlmb lirmb ilrmb mrlbi rmlbi mlrbi lmrbi rlmbi lrmbi mrbli rmbli mbrli bmrli rbmli brmli mlbri lmbri mblri bmlri lbmri blmri rlbmi lrbmi rblmi brlmi lbrmi blrmi mribl rmibl mirbl imrbl rimbl irmbl mrbil rmbil mbril bmril rbmil brmil mibrl imbrl mbirl bmirl ibmrl bimrl ribml irbml rbiml briml ibrml birml mlibr lmibr milbr imlbr limbr ilmbr mlbir lmbir mblir bmlir lbmir blmir miblr imblr mbilr bmilr ibmlr bimlr libmr ilbmr lbimr blimr iblmr bilmr rlibm lribm rilbm irlbm lirbm ilrbm rlbim lrbim rblim brlim lbrim blrim riblm irblm rbilm brilm ibrlm birlm librm ilbrm lbirm blirm iblrm bilrm
Note: these 'words' (valid or invalid) are all the permutations of the word mrlib. These words are obtained by scrambling the letters in mrlib.