brium rbium birum ibrum ribum irbum bruim rbuim burim ubrim rubim urbim biurm iburm buirm ubirm iubrm uibrm riubm irubm ruibm uribm iurbm uirbm brimu rbimu birmu ibrmu ribmu irbmu brmiu rbmiu bmriu mbriu rmbiu mrbiu bimru ibmru bmiru mbiru imbru mibru rimbu irmbu rmibu mribu imrbu mirbu brumi rbumi burmi ubrmi rubmi urbmi brmui rbmui bmrui mbrui rmbui mrbui bumri ubmri bmuri mburi umbri mubri rumbi urmbi rmubi mrubi umrbi murbi biumr ibumr buimr ubimr iubmr uibmr bimur ibmur bmiur mbiur imbur mibur bumir ubmir bmuir mbuir umbir mubir iumbr uimbr imubr miubr umibr muibr riumb irumb ruimb urimb iurmb uirmb rimub irmub rmiub mriub imrub mirub rumib urmib rmuib mruib umrib murib iumrb uimrb imurb miurb umirb muirb
Note: these 'words' (valid or invalid) are all the permutations of the word brium. These words are obtained by scrambling the letters in brium.