erbia rebia ebria beria rbeia breia eriba reiba eirba ierba rieba ireba ebira beira eibra iebra biera ibera rbiea briea ribea irbea birea ibrea erbai rebai ebrai berai rbeai breai erabi reabi earbi aerbi raebi arebi ebari beari eabri aebri baeri aberi rbaei braei rabei arbei barei abrei eriab reiab eirab ierab rieab ireab eraib reaib earib aerib raeib areib eiarb iearb eairb aeirb iaerb aierb riaeb iraeb raieb arieb iareb aireb ebiar beiar eibar iebar biear ibear ebair beair eabir aebir baeir abeir eiabr ieabr eaibr aeibr iaebr aiebr biaer ibaer baier abier iaber aiber rbiae briae ribae irbae birae ibrae rbaie braie rabie arbie barie abrie riabe irabe raibe aribe iarbe airbe biare ibare baire abire iabre aibre
Note: these 'words' (valid or invalid) are all the permutations of the word erbia. These words are obtained by scrambling the letters in erbia.