feral efral freal rfeal erfal refal fearl efarl faerl aferl eafrl aefrl frael rfael farel afrel rafel arfel erafl reafl earfl aerfl raefl arefl ferla efrla frela rfela erfla refla felra eflra flera lfera elfra lefra frlea rflea flrea lfrea rlfea lrfea erlfa relfa elrfa lerfa rlefa lrefa fealr efalr faelr afelr eaflr aeflr felar eflar flear lfear elfar lefar faler afler flaer lfaer alfer lafer ealfr aelfr elafr leafr alefr laefr frale rfale farle afrle rafle arfle frlae rflae flrae lfrae rlfae lrfae falre aflre flare lfare alfre lafre ralfe arlfe rlafe lrafe alrfe larfe eralf realf earlf aerlf raelf arelf erlaf relaf elraf leraf rleaf lreaf ealrf aelrf elarf learf alerf laerf ralef arlef rlaef lraef alref laref
Note: these 'words' (valid or invalid) are all the permutations of the word feral. These words are obtained by scrambling the letters in feral.