10 x 15 13 x 13 13 x 18 15 x 15 15 x 21 18 x 18 18 x 24 21 x 30 24 x 30 25 x 25 25 x 35 25 x 38 30 x 30 30 x 40 30 x 42 30 x 45 35 x 35 35 x 45 35 x 50 40 x 40 40 x 60 50 x 50 50 x 70