whift hwift wihft iwhft hiwft ihwft whfit hwfit wfhit fwhit hfwit fhwit wifht iwfht wfiht fwiht ifwht fiwht hifwt ihfwt hfiwt fhiwt ifhwt fihwt whitf hwitf wihtf iwhtf hiwtf ihwtf whtif hwtif wthif twhif htwif thwif withf iwthf wtihf twihf itwhf tiwhf hitwf ihtwf htiwf thiwf ithwf tihwf whfti hwfti wfhti fwhti hfwti fhwti whtfi hwtfi wthfi twhfi htwfi thwfi wfthi fwthi wtfhi twfhi ftwhi tfwhi hftwi fhtwi htfwi thfwi fthwi tfhwi wifth iwfth wfith fwith ifwth fiwth witfh iwtfh wtifh twifh itwfh tiwfh wftih fwtih wtfih twfih ftwih tfwih iftwh fitwh itfwh tifwh ftiwh tfiwh hiftw ihftw hfitw fhitw ifhtw fihtw hitfw ihtfw htifw thifw ithfw tihfw hftiw fhtiw htfiw thfiw fthiw tfhiw ifthw fithw itfhw tifhw ftihw tfihw
Note: these 'words' (valid or invalid) are all the permutations of the word whift. These words are obtained by scrambling the letters in whift.