20 x 10, 20 x 15, 25 x 15, 30 x 15, 40 x 20, 40 x 30, 50 x 20, 50 x 30, 60 x 20, 50 x 40, 60 x 30, 60 x 40, 70 x 30, 80 x 40, 80 x 60, 100 x 40, 100 x 50, 100 x 60, 100 x 80