sighs isghs sgihs gsihs igshs gishs sihgs ishgs shigs hsigs ihsgs hisgs sghis gshis shgis hsgis ghsis hgsis ighss gihss ihgss higss ghiss hgiss sigsh isgsh sgish gsish igssh gissh sisgh issgh ssigh ssigh issgh sisgh sgsih gssih ssgih ssgih gssih sgsih igssh gissh isgsh sigsh gsish sgish sihsg ishsg shisg hsisg ihssg hissg sishg isshg ssihg ssihg isshg sishg shsig hssig sshig sshig hssig shsig ihssg hissg ishsg sihsg hsisg shisg sghsi gshsi shgsi hsgsi ghssi hgssi sgshi gsshi ssghi ssghi gsshi sgshi shsgi hssgi sshgi sshgi hssgi shsgi ghssi hgssi gshsi sghsi hsgsi shgsi ighss gihss ihgss higss ghiss hgiss igshs gishs isghs sighs gsihs sgihs ihsgs hisgs ishgs sihgs hsigs shigs ghsis hgsis gshis sghis hsgis shgis
Note: these 'words' (valid or invalid) are all the permutations of the word sighs. These words are obtained by scrambling the letters in sighs.