A pattern/weave I invented & call Fáfnir's Last Stand (A.K.A. Callisto 6 in 1). Every 2nd column of large rings go through 3 rows of 2 in 1 chains made by the small rings. 18g wire; L. rings= 12mm O.D., S. rings= 8mm O.D.; named aft. the dragon Fáfnir from Norse & Germanic mythology.