ravel arvel rvael vrael avrel varel raevl arevl reavl eravl aervl earvl rveal vreal reval erval veral evral averl vaerl aevrl eavrl vearl evarl ravle arvle rvale vrale avrle varle ralve arlve rlave lrave alrve larve rvlae vrlae rlvae lrvae vlrae lvrae avlre valre alvre lavre vlare lvare raelv arelv realv eralv aerlv earlv ralev arlev rlaev lraev alrev larev relav erlav rleav lreav elrav lerav aelrv ealrv alerv laerv elarv learv rvela vrela revla ervla verla evrla rvlea vrlea rlvea lrvea vlrea lvrea relva erlva rleva lreva elrva lerva velra evlra vlera lvera elvra levra avelr vaelr aevlr eavlr vealr evalr avler valer alver laver vlaer lvaer aelvr ealvr alevr laevr elavr leavr velar evlar vlear lvear elvar levar
Note: these 'words' (valid or invalid) are all the permutations of the word ravel. These words are obtained by scrambling the letters in ravel.