ghosts hgosts gohsts oghsts hogsts ohgsts ghsots hgsots gshots sghots hsgots shgots goshts ogshts gsohts sgohts osghts soghts hosgts ohsgts hsogts shogts oshgts sohgts ghotss hgotss gohtss oghtss hogtss ohgtss ghtoss hgtoss gthoss tghoss htgoss thgoss gothss ogthss gtohss tgohss otghss toghss hotgss ohtgss htogss thogss othgss tohgss ghstos hgstos gshtos sghtos hsgtos shgtos ghtsos hgtsos gthsos tghsos htgsos thgsos gsthos sgthos gtshos tgshos stghos tsghos hstgos shtgos htsgos thsgos sthgos tshgos gosths ogsths gsoths sgoths osgths sogths gotshs ogtshs gtoshs tgoshs otgshs togshs gstohs sgtohs gtsohs tgsohs stgohs tsgohs ostghs sotghs otsghs tosghs stoghs tsoghs hostgs ohstgs hsotgs shotgs oshtgs sohtgs hotsgs ohtsgs htosgs thosgs othsgs tohsgs hstogs shtogs htsogs thsogs sthogs tshogs osthgs sothgs otshgs toshgs stohgs tsohgs ghosst hgosst gohsst oghsst hogsst ohgsst ghsost hgsost gshost sghost hsgost shgost goshst ogshst gsohst sgohst osghst soghst hosgst ohsgst hsogst shogst oshgst sohgst ghosst hgosst gohsst oghsst hogsst ohgsst ghsost hgsost gshost sghost hsgost shgost goshst ogshst gsohst sgohst osghst soghst hosgst ohsgst hsogst shogst oshgst sohgst ghssot hgssot gshsot sghsot hsgsot shgsot ghssot hgssot gshsot sghsot hsgsot shgsot gsshot sgshot gsshot sgshot ssghot ssghot hssgot shsgot hssgot shsgot sshgot sshgot gossht ogssht gsosht sgosht osgsht sogsht gossht ogssht gsosht sgosht osgsht sogsht gssoht sgsoht gssoht sgsoht ssgoht ssgoht ossght sosght ossght sosght ssoght ssoght hossgt ohssgt hsosgt shosgt oshsgt sohsgt hossgt ohssgt hsosgt shosgt oshsgt sohsgt hssogt shsogt hssogt shsogt sshogt sshogt osshgt soshgt osshgt soshgt ssohgt ssohgt ghotss hgotss gohtss oghtss hogtss ohgtss ghtoss hgtoss gthoss tghoss htgoss thgoss gothss ogthss gtohss tgohss otghss toghss hotgss ohtgss htogss thogss othgss tohgss ghosts hgosts gohsts oghsts hogsts ohgsts ghsots hgsots gshots sghots hsgots shgots goshts ogshts gsohts sgohts osghts soghts hosgts ohsgts hsogts shogts oshgts sohgts ghtsos hgtsos gthsos tghsos htgsos thgsos ghstos hgstos gshtos sghtos hsgtos shgtos gtshos tgshos gsthos sgthos tsghos stghos htsgos thsgos hstgos shtgos tshgos sthgos gotshs ogtshs gtoshs tgoshs otgshs togshs gosths ogsths gsoths sgoths osgths sogths gtsohs tgsohs gstohs sgtohs tsgohs stgohs otsghs tosghs ostghs sotghs tsoghs stoghs hotsgs ohtsgs htosgs thosgs othsgs tohsgs hostgs ohstgs hsotgs shotgs oshtgs sohtgs htsogs thsogs hstogs shtogs tshogs sthogs otshgs toshgs osthgs sothgs tsohgs stohgs ghstso hgstso gshtso sghtso hsgtso shgtso ghtsso hgtsso gthsso tghsso htgsso thgsso gsthso sgthso gtshso tgshso stghso tsghso hstgso shtgso htsgso thsgso sthgso tshgso ghssto hgssto gshsto sghsto hsgsto shgsto ghssto hgssto gshsto sghsto hsgsto shgsto gsshto sgshto gsshto sgshto ssghto ssghto hssgto shsgto hssgto shsgto sshgto sshgto ghtsso hgtsso gthsso tghsso htgsso thgsso ghstso hgstso gshtso sghtso hsgtso shgtso gtshso tgshso gsthso sgthso tsghso stghso htsgso thsgso hstgso shtgso tshgso sthgso gstsho sgtsho gtssho tgssho stgsho tsgsho gsstho sgstho gsstho sgstho ssgtho ssgtho gtssho tgssho gstsho sgtsho tsgsho stgsho stsgho tssgho sstgho sstgho tssgho stsgho hstsgo shtsgo htssgo thssgo sthsgo tshsgo hsstgo shstgo hsstgo shstgo sshtgo sshtgo htssgo thssgo hstsgo shtsgo tshsgo sthsgo stshgo tsshgo ssthgo ssthgo tsshgo stshgo gostsh ogstsh gsotsh sgotsh osgtsh sogtsh gotssh ogtssh gtossh tgossh otgssh togssh gstosh sgtosh gtsosh tgsosh stgosh tsgosh ostgsh sotgsh otsgsh tosgsh stogsh tsogsh gossth ogssth gsosth sgosth osgsth sogsth gossth ogssth gsosth sgosth osgsth sogsth gssoth sgsoth gssoth sgsoth ssgoth ssgoth ossgth sosgth ossgth sosgth ssogth ssogth gotssh ogtssh gtossh tgossh otgssh togssh gostsh ogstsh gsotsh sgotsh osgtsh sogtsh gtsosh tgsosh gstosh sgtosh tsgosh stgosh otsgsh tosgsh ostgsh sotgsh tsogsh stogsh gstsoh sgtsoh gtssoh tgssoh stgsoh tsgsoh gsstoh sgstoh gsstoh sgstoh ssgtoh ssgtoh gtssoh tgssoh gstsoh sgtsoh tsgsoh stgsoh stsgoh tssgoh sstgoh sstgoh tssgoh stsgoh ostsgh sotsgh otssgh tossgh stosgh tsosgh osstgh sostgh osstgh sostgh ssotgh ssotgh otssgh tossgh ostsgh sotsgh tsosgh stosgh stsogh tssogh sstogh sstogh tssogh stsogh hostsg ohstsg hsotsg shotsg oshtsg sohtsg hotssg ohtssg htossg thossg othssg tohssg hstosg shtosg htsosg thsosg sthosg tshosg osthsg sothsg otshsg toshsg stohsg tsohsg hosstg ohsstg hsostg shostg oshstg sohstg hosstg ohsstg hsostg shostg oshstg sohstg hssotg shsotg hssotg shsotg sshotg sshotg osshtg soshtg osshtg soshtg ssohtg ssohtg hotssg ohtssg htossg thossg othssg tohssg hostsg ohstsg hsotsg shotsg oshtsg sohtsg htsosg thsosg hstosg shtosg tshosg sthosg otshsg toshsg osthsg sothsg tsohsg stohsg hstsog shtsog htssog thssog sthsog tshsog hsstog shstog hsstog shstog sshtog sshtog htssog thssog hstsog shtsog tshsog sthsog stshog tsshog ssthog ssthog tsshog stshog ostshg sotshg otsshg tosshg stoshg tsoshg ossthg sosthg ossthg sosthg ssothg ssothg otsshg tosshg ostshg sotshg tsoshg stoshg stsohg tssohg sstohg sstohg tssohg stsohg
Note: these 'words' (valid or invalid) are all the permutations of the word ghosts. These words are obtained by scrambling the letters in ghosts.