The BBC Pattern $9.00 Paper Pattern Paper Pattern PDF Pattern Paper Pattern PDF Pattern Number of yards (min. 1/2) -- 1/4 1/2 3/4 Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. The BBC (Big Block Chain) is an original pattern by Quilt Expressions. You can make this quilt up in two different sizes: 70" x 80" or 50" x 60". Tweet