fides ifdes fdies dfies idfes difes fieds ifeds feids efids iefds eifds fdeis dfeis fedis efdis defis edfis idefs diefs iedfs eidfs deifs edifs fidse ifdse fdise dfise idfse difse fisde ifsde fside sfide isfde sifde fdsie dfsie fsdie sfdie dsfie sdfie idsfe disfe isdfe sidfe dsife sdife fiesd ifesd feisd efisd iefsd eifsd fised ifsed fsied sfied isfed sifed fesid efsid fseid sfeid esfid sefid iesfd eisfd isefd siefd esifd seifd fdesi dfesi fedsi efdsi defsi edfsi fdsei dfsei fsdei sfdei dsfei sdfei fesdi efsdi fsedi sfedi esfdi sefdi desfi edsfi dsefi sdefi esdfi sedfi idesf diesf iedsf eidsf deisf edisf idsef disef isdef sidef dsief sdief iesdf eisdf isedf siedf esidf seidf desif edsif dseif sdeif esdif sedif
Note: these 'words' (valid or invalid) are all the permutations of the word fides. These words are obtained by scrambling the letters in fides.