mhcg hmcg mchg cmhg hcmg chmg mhgc hmgc mghc gmhc hgmc ghmc mcgh cmgh mgch gmch cgmh gcmh hcgm chgm hgcm ghcm cghm gchm
Note: these 'words' (valid or invalid) are all the permutations of the word mhcg. These words are obtained by scrambling the letters in mhcg.