gursh ugrsh grush rgush urgsh rugsh gusrh ugsrh gsurh sgurh usgrh sugrh grsuh rgsuh gsruh sgruh rsguh srguh ursgh rusgh usrgh surgh rsugh srugh gurhs ugrhs gruhs rguhs urghs rughs guhrs ughrs ghurs hgurs uhgrs hugrs grhus rghus ghrus hgrus rhgus hrgus urhgs ruhgs uhrgs hurgs rhugs hrugs gushr ugshr gsuhr sguhr usghr sughr guhsr ughsr ghusr hgusr uhgsr hugsr gshur sghur ghsur hgsur shgur hsgur ushgr suhgr uhsgr husgr shugr hsugr grshu rgshu gsrhu sgrhu rsghu srghu grhsu rghsu ghrsu hgrsu rhgsu hrgsu gshru sghru ghsru hgsru shgru hsgru rshgu srhgu rhsgu hrsgu shrgu hsrgu urshg rushg usrhg surhg rsuhg sruhg urhsg ruhsg uhrsg hursg rhusg hrusg ushrg suhrg uhsrg husrg shurg hsurg rshug srhug rhsug hrsug shrug hsrug
Note: these 'words' (valid or invalid) are all the permutations of the word gursh. These words are obtained by scrambling the letters in gursh.