sgmr gsmr smgr msgr gmsr mgsr sgrm gsrm srgm rsgm grsm rgsm smrg msrg srmg rsmg mrsg rmsg gmrs mgrs grms rgms mrgs rmgs
Note: these 'words' (valid or invalid) are all the permutations of the word sgmr. These words are obtained by scrambling the letters in sgmr.