howks ohwks hwoks whoks owhks wohks hokws ohkws hkows khows okhws kohws hwkos whkos hkwos khwos wkhos kwhos owkhs wokhs okwhs kowhs wkohs kwohs howsk ohwsk hwosk whosk owhsk wohsk hoswk ohswk hsowk showk oshwk sohwk hwsok whsok hswok shwok wshok swhok owshk woshk oswhk sowhk wsohk swohk hoksw ohksw hkosw khosw okhsw kohsw hoskw ohskw hsokw shokw oshkw sohkw hksow khsow hskow shkow kshow skhow okshw koshw oskhw sokhw ksohw skohw hwkso whkso hkwso khwso wkhso kwhso hwsko whsko hswko shwko wshko swhko hkswo khswo hskwo shkwo kshwo skhwo wksho kwsho wskho swkho kswho skwho owksh woksh okwsh kowsh wkosh kwosh owskh woskh oswkh sowkh wsokh swokh okswh koswh oskwh sokwh ksowh skowh wksoh kwsoh wskoh swkoh kswoh skwoh
Note: these 'words' (valid or invalid) are all the permutations of the word howks. These words are obtained by scrambling the letters in howks.