gdrne dgrne grdne rgdne drgne rdgne gdnre dgnre gndre ngdre dngre ndgre grnde rgnde gnrde ngrde rngde nrgde drnge rdnge dnrge ndrge rndge nrdge gdren dgren grden rgden drgen rdgen gdern dgern gedrn egdrn degrn edgrn gredn rgedn gerdn egrdn regdn ergdn dregn rdegn dergn edrgn redgn erdgn gdner dgner gnder ngder dnger ndger gdenr dgenr gednr egdnr degnr edgnr gnedr ngedr gendr egndr negdr engdr dnegr ndegr dengr edngr nedgr endgr grned rgned gnred ngred rnged nrged grend rgend gernd egrnd regnd ergnd gnerd ngerd genrd egnrd negrd engrd rnegd nregd rengd erngd nergd enrgd drneg rdneg dnreg ndreg rndeg nrdeg dreng rdeng derng edrng redng erdng dnerg nderg denrg ednrg nedrg endrg rnedg nredg rendg erndg nerdg enrdg
Note: these 'words' (valid or invalid) are all the permutations of the word gdrne. These words are obtained by scrambling the letters in gdrne.