purer uprer pruer rpuer urper ruper puerr uperr peurr epurr ueprr euprr preur rpeur perur eprur repur erpur urepr ruepr uerpr eurpr reupr erupr purre uprre prure rpure urpre rupre purre uprre prure rpure urpre rupre prrue rprue prrue rprue rrpue rrpue urrpe rurpe urrpe rurpe rrupe rrupe puerr uperr peurr epurr ueprr euprr purer uprer pruer rpuer urper ruper perur eprur preur rpeur erpur repur uerpr eurpr urepr ruepr erupr reupr preru rperu perru eprru repru erpru prreu rpreu prreu rpreu rrpeu rrpeu perru eprru preru rperu erpru repru rerpu errpu rrepu rrepu errpu rerpu urerp ruerp uerrp eurrp reurp erurp urrep rurep urrep rurep rruep rruep uerrp eurrp urerp ruerp erurp reurp rerup errup rreup rreup errup rerup
Note: these 'words' (valid or invalid) are all the permutations of the word purer. These words are obtained by scrambling the letters in purer.