slish lsish silsh islsh lissh ilssh slsih lssih sslih sslih lssih slsih sislh isslh ssilh ssilh isslh sislh lissh ilssh lsish slish islsh silsh slihs lsihs silhs islhs lishs ilshs slhis lshis shlis hslis lhsis hlsis sihls ishls shils hsils ihsls hisls lihss ilhss lhiss hliss ihlss hilss slshi lsshi sslhi sslhi lsshi slshi slhsi lshsi shlsi hslsi lhssi hlssi sshli sshli shsli hssli shsli hssli lshsi slhsi lhssi hlssi shlsi hslsi sishl isshl ssihl ssihl isshl sishl sihsl ishsl shisl hsisl ihssl hissl sshil sshil shsil hssil shsil hssil ishsl sihsl ihssl hissl shisl hsisl lishs ilshs lsihs slihs islhs silhs lihss ilhss lhiss hliss ihlss hilss lshis slhis lhsis hlsis shlis hslis ishls sihls ihsls hisls shils hsils
Note: these 'words' (valid or invalid) are all the permutations of the word slish. These words are obtained by scrambling the letters in slish.