dwolf wdolf dowlf odwlf wodlf owdlf dwlof wdlof dlwof ldwof wldof lwdof dolwf odlwf dlowf ldowf oldwf lodwf woldf owldf wlodf lwodf olwdf lowdf dwofl wdofl dowfl odwfl wodfl owdfl dwfol wdfol dfwol fdwol wfdol fwdol dofwl odfwl dfowl fdowl ofdwl fodwl wofdl owfdl wfodl fwodl ofwdl fowdl dwlfo wdlfo dlwfo ldwfo wldfo lwdfo dwflo wdflo dfwlo fdwlo wfdlo fwdlo dlfwo ldfwo dflwo fdlwo lfdwo fldwo wlfdo lwfdo wfldo fwldo lfwdo flwdo dolfw odlfw dlofw ldofw oldfw lodfw doflw odflw dfolw fdolw ofdlw fodlw dlfow ldfow dflow fdlow lfdow fldow olfdw lofdw ofldw foldw lfodw flodw wolfd owlfd wlofd lwofd olwfd lowfd wofld owfld wfold fwold ofwld fowld wlfod lwfod wflod fwlod lfwod flwod olfwd lofwd oflwd folwd lfowd flowd
Note: these 'words' (valid or invalid) are all the permutations of the word dwolf. These words are obtained by scrambling the letters in dwolf.