Fig. 9

Some examples of structure forming binary synthons clockwise from a \({\text{C}}_{2}^{2} 8\)·[>a>f], b \({\text{R}}_{2}^{2} 8\)·[>a>g], c \({\text{C}}_{2}^{2} 8\)·[>b>g] and d \({\text{R}}_{2}^{2} 8\)·[>b>f] all viewed down the b axis