brign rbign birgn ibrgn ribgn irbgn brgin rbgin bgrin gbrin rgbin grbin bigrn ibgrn bgirn gbirn igbrn gibrn rigbn irgbn rgibn gribn igrbn girbn bring rbing birng ibrng ribng irbng brnig rbnig bnrig nbrig rnbig nrbig binrg ibnrg bnirg nbirg inbrg nibrg rinbg irnbg rnibg nribg inrbg nirbg brgni rbgni bgrni gbrni rgbni grbni brngi rbngi bnrgi nbrgi rnbgi nrbgi bgnri gbnri bngri nbgri gnbri ngbri rgnbi grnbi rngbi nrgbi gnrbi ngrbi bignr ibgnr bginr gbinr igbnr gibnr bingr ibngr bnigr nbigr inbgr nibgr bgnir gbnir bngir nbgir gnbir ngbir ignbr ginbr ingbr nigbr gnibr ngibr rignb irgnb rginb grinb igrnb girnb ringb irngb rnigb nrigb inrgb nirgb rgnib grnib rngib nrgib gnrib ngrib ignrb ginrb ingrb nigrb gnirb ngirb
Note: these 'words' (valid or invalid) are all the permutations of the word brign. These words are obtained by scrambling the letters in brign.