eires ieres eries reies irees riees eiers ieers eeirs eeirs ieers eiers ereis reeis eeris eeris reeis ereis irees riees ieres eires reies eries eirse ierse erise reise irese riese eisre iesre esire seire isere siere ersie resie esrie serie rseie sreie irsee risee isree siree rsiee sriee eiesr ieesr eeisr eeisr ieesr eiesr eiser ieser esier seier iseer sieer eesir eesir eseir seeir eseir seeir ieser eiser iseer sieer esier seier eresi reesi eersi eersi reesi eresi ersei resei esrei serei rseei sreei eesri eesri eseri seeri eseri seeri resei ersei rseei sreei esrei serei irese riese ierse eirse reise erise irsee risee isree siree rsiee sriee iesre eisre isere siere esire seire resie ersie rseie sreie esrie serie
Note: these 'words' (valid or invalid) are all the permutations of the word eires. These words are obtained by scrambling the letters in eires.