brick rbick birck ibrck ribck irbck brcik rbcik bcrik cbrik rcbik crbik bicrk ibcrk bcirk cbirk icbrk cibrk ricbk ircbk rcibk cribk icrbk cirbk brikc rbikc birkc ibrkc ribkc irbkc brkic rbkic bkric kbric rkbic krbic bikrc ibkrc bkirc kbirc ikbrc kibrc rikbc irkbc rkibc kribc ikrbc kirbc brcki rbcki bcrki cbrki rcbki crbki brkci rbkci bkrci kbrci rkbci krbci bckri cbkri bkcri kbcri ckbri kcbri rckbi crkbi rkcbi krcbi ckrbi kcrbi bickr ibckr bcikr cbikr icbkr cibkr bikcr ibkcr bkicr kbicr ikbcr kibcr bckir cbkir bkcir kbcir ckbir kcbir ickbr cikbr ikcbr kicbr ckibr kcibr rickb irckb rcikb crikb icrkb cirkb rikcb irkcb rkicb kricb ikrcb kircb rckib crkib rkcib krcib ckrib kcrib ickrb cikrb ikcrb kicrb ckirb kcirb
Note: these 'words' (valid or invalid) are all the permutations of the word brick. These words are obtained by scrambling the letters in brick.