CREATE TABLE table_name_83 (region_1 VARCHAR(255), no_of_episodes VARCHAR(255), region_2 VARCHAR(255))
Which region 1 has 12 Episodes and a Region 2 of 18 August 2008?
    
SQL: SELECT region_1 FROM table_name_83 WHERE no_of_episodes = 12 AND region_2 = "18 august 2008"