sisgo issgo ssigo ssigo issgo sisgo sigso isgso sgiso gsiso igsso gisso ssgio ssgio sgsio gssio sgsio gssio isgso sigso igsso gisso sgiso gsiso sisog issog ssiog ssiog issog sisog siosg isosg soisg osisg iossg oissg ssoig ssoig sosig ossig sosig ossig isosg siosg iossg oissg soisg osisg sigos isgos sgios gsios igsos gisos siogs isogs soigs osigs iosgs oisgs sgois gsois sogis osgis gosis ogsis igoss gioss iogss oigss goiss ogiss ssgoi ssgoi sgsoi gssoi sgsoi gssoi ssogi ssogi sosgi ossgi sosgi ossgi sgosi gsosi sogsi osgsi gossi ogssi sgosi gsosi sogsi osgsi gossi ogssi isgos sigos igsos gisos sgios gsios isogs siogs iosgs oisgs soigs osigs igoss gioss iogss oigss goiss ogiss sgois gsois sogis osgis gosis ogsis
Note: these 'words' (valid or invalid) are all the permutations of the word sisgo. These words are obtained by scrambling the letters in sisgo.