ferny efrny freny rfeny erfny refny fenry efnry fnery nfery enfry nefry frney rfney fnrey nfrey rnfey nrfey ernfy renfy enrfy nerfy rnefy nrefy feryn efryn freyn rfeyn erfyn refyn feyrn efyrn fyern yfern eyfrn yefrn fryen rfyen fyren yfren ryfen yrfen eryfn reyfn eyrfn yerfn ryefn yrefn fenyr efnyr fneyr nfeyr enfyr nefyr feynr efynr fyenr yfenr eyfnr yefnr fnyer nfyer fyner yfner nyfer ynfer enyfr neyfr eynfr yenfr nyefr ynefr frnye rfnye fnrye nfrye rnfye nrfye fryne rfyne fyrne yfrne ryfne yrfne fnyre nfyre fynre yfnre nyfre ynfre rnyfe nryfe rynfe yrnfe nyrfe ynrfe ernyf renyf enryf neryf rneyf nreyf erynf reynf eyrnf yernf ryenf yrenf enyrf neyrf eynrf yenrf nyerf ynerf rnyef nryef rynef yrnef nyref ynref
Note: these 'words' (valid or invalid) are all the permutations of the word ferny. These words are obtained by scrambling the letters in ferny.