vsish svish vissh ivssh sivsh isvsh vssih svsih vssih svsih ssvih ssvih vissh ivssh vsish svish isvsh sivsh sisvh issvh ssivh ssivh issvh sisvh vsihs svihs vishs ivshs sivhs isvhs vshis svhis vhsis hvsis shvis hsvis vihss ivhss vhiss hviss ihvss hivss sihvs ishvs shivs hsivs ihsvs hisvs vsshi svshi vsshi svshi ssvhi ssvhi vshsi svhsi vhssi hvssi shvsi hsvsi vshsi svhsi vhssi hvssi shvsi hsvsi sshvi sshvi shsvi hssvi shsvi hssvi vishs ivshs vsihs svihs isvhs sivhs vihss ivhss vhiss hviss ihvss hivss vshis svhis vhsis hvsis shvis hsvis ishvs sihvs ihsvs hisvs shivs hsivs sishv isshv ssihv ssihv isshv sishv sihsv ishsv shisv hsisv ihssv hissv sshiv sshiv shsiv hssiv shsiv hssiv ishsv sihsv ihssv hissv shisv hsisv
Note: these 'words' (valid or invalid) are all the permutations of the word vsish. These words are obtained by scrambling the letters in vsish.