regna ergna rgena grena egrna gerna renga ernga rnega nrega enrga nerga rgnea grnea rngea nrgea gnrea ngrea egnra genra engra negra gnera ngera regan ergan rgean grean egran geran reagn eragn raegn aregn eargn aergn rgaen graen ragen argen garen agren egarn gearn eagrn aegrn gaern agern renag ernag rneag nreag enrag nerag reang erang raeng areng earng aerng rnaeg nraeg raneg arneg nareg anreg enarg nearg eanrg aenrg naerg anerg rgnae grnae rngae nrgae gnrae ngrae rgane grane ragne argne garne agrne rnage nrage range arnge narge anrge gnare ngare ganre agnre nagre angre egnar genar engar negar gnear ngear eganr geanr eagnr aegnr gaenr agenr enagr neagr eangr aengr naegr anegr gnaer ngaer ganer agner nager anger
Note: these 'words' (valid or invalid) are all the permutations of the word regna. These words are obtained by scrambling the letters in regna.