sbng bsng snbg nsbg bnsg nbsg sbgn bsgn sgbn gsbn bgsn gbsn sngb nsgb sgnb gsnb ngsb gnsb bngs nbgs bgns gbns ngbs gnbs
Note: these 'words' (valid or invalid) are all the permutations of the word sbng. These words are obtained by scrambling the letters in sbng.