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