fohns ofhns fhons hfons ohfns hofns fonhs ofnhs fnohs nfohs onfhs nofhs fhnos hfnos fnhos nfhos hnfos nhfos ohnfs honfs onhfs nohfs hnofs nhofs fohsn ofhsn fhosn hfosn ohfsn hofsn foshn ofshn fsohn sfohn osfhn sofhn fhson hfson fshon sfhon hsfon shfon ohsfn hosfn oshfn sohfn hsofn shofn fonsh ofnsh fnosh nfosh onfsh nofsh fosnh ofsnh fsonh sfonh osfnh sofnh fnsoh nfsoh fsnoh sfnoh nsfoh snfoh onsfh nosfh osnfh sonfh nsofh snofh fhnso hfnso fnhso nfhso hnfso nhfso fhsno hfsno fshno sfhno hsfno shfno fnsho nfsho fsnho sfnho nsfho snfho hnsfo nhsfo hsnfo shnfo nshfo snhfo ohnsf honsf onhsf nohsf hnosf nhosf ohsnf hosnf oshnf sohnf hsonf shonf onshf noshf osnhf sonhf nsohf snohf hnsof nhsof hsnof shnof nshof snhof
Note: these 'words' (valid or invalid) are all the permutations of the word fohns. These words are obtained by scrambling the letters in fohns.