NSArray *arrData = @[@"1",@"2",@"3",@"4"];

    NSArray *arrKey = @[@"A",@"B",@"C",@"D"];

    NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithObjects:arrData forKeys:arrKey];

    NSArray *arrData1 = @[@"5",@"6",@"7",@"8"];

    NSArray *arrKey1 = @[@"E",@"F",@"G",@"H"];

    NSMutableDictionary *dic1 = [NSMutableDictionary dictionaryWithObjects:arrData1 forKeys:arrKey1];

    NSMutableArray *arr = [NSMutableArray arrayWithObjects:dic,dic1, nil];

    for (int i=0; i<[arr count]; i++) {

        for (id f in [arr objectAtIndex:i]) {

            NSLog(@"value = %@",[[arr objectAtIndex:i] valueForKey:f]);

            NSLog(@"key = %@",f);

        }

    }

    NSLog(@"arr = %@",[arr description]);