raper arper rpaer praer aprer parer raepr arepr reapr erapr aerpr earpr rpear prear repar erpar perar eprar aperr paerr aeprr eaprr pearr eparr rapre arpre rpare prare aprre parre rarpe arrpe rrape rrape arrpe rarpe rprae prrae rrpae rrpae prrae rprae aprre parre arpre rapre prare rpare raerp arerp rearp erarp aerrp earrp rarep arrep rraep rraep arrep rarep rerap errap rreap rreap errap rerap aerrp earrp arerp raerp erarp rearp rpera prera repra erpra perra eprra rprea prrea rrpea rrpea prrea rprea rerpa errpa rrepa rrepa errpa rerpa perra eprra prera rpera erpra repra aperr paerr aeprr eaprr pearr eparr aprer parer arper raper praer rpaer aerpr earpr arepr raepr erapr reapr perar eprar prear rpear erpar repar
Note: these 'words' (valid or invalid) are all the permutations of the word raper. These words are obtained by scrambling the letters in raper.