dwhni wdhni dhwni hdwni whdni hwdni dwnhi wdnhi dnwhi ndwhi wndhi nwdhi dhnwi hdnwi dnhwi ndhwi hndwi nhdwi whndi hwndi wnhdi nwhdi hnwdi nhwdi dwhin wdhin dhwin hdwin whdin hwdin dwihn wdihn diwhn idwhn widhn iwdhn dhiwn hdiwn dihwn idhwn hidwn ihdwn whidn hwidn wihdn iwhdn hiwdn ihwdn dwnih wdnih dnwih ndwih wndih nwdih dwinh wdinh diwnh idwnh widnh iwdnh dniwh ndiwh dinwh idnwh nidwh indwh wnidh nwidh windh iwndh niwdh inwdh dhniw hdniw dnhiw ndhiw hndiw nhdiw dhinw hdinw dihnw idhnw hidnw ihdnw dnihw ndihw dinhw idnhw nidhw indhw hnidw nhidw hindw ihndw nihdw inhdw whnid hwnid wnhid nwhid hnwid nhwid whind hwind wihnd iwhnd hiwnd ihwnd wnihd nwihd winhd iwnhd niwhd inwhd hniwd nhiwd hinwd ihnwd nihwd inhwd
Note: these 'words' (valid or invalid) are all the permutations of the word dwhni. These words are obtained by scrambling the letters in dwhni.