howfs ohwfs hwofs whofs owhfs wohfs hofws ohfws hfows fhows ofhws fohws hwfos whfos hfwos fhwos wfhos fwhos owfhs wofhs ofwhs fowhs wfohs fwohs howsf ohwsf hwosf whosf owhsf wohsf hoswf ohswf hsowf showf oshwf sohwf hwsof whsof hswof shwof wshof swhof owshf woshf oswhf sowhf wsohf swohf hofsw ohfsw hfosw fhosw ofhsw fohsw hosfw ohsfw hsofw shofw oshfw sohfw hfsow fhsow hsfow shfow fshow sfhow ofshw foshw osfhw sofhw fsohw sfohw hwfso whfso hfwso fhwso wfhso fwhso hwsfo whsfo hswfo shwfo wshfo swhfo hfswo fhswo hsfwo shfwo fshwo sfhwo wfsho fwsho wsfho swfho fswho sfwho owfsh wofsh ofwsh fowsh wfosh fwosh owsfh wosfh oswfh sowfh wsofh swofh ofswh foswh osfwh sofwh fsowh sfowh wfsoh fwsoh wsfoh swfoh fswoh sfwoh
Note: these 'words' (valid or invalid) are all the permutations of the word howfs. These words are obtained by scrambling the letters in howfs.