// @BAKE dot -Tpng $@ -o $*.png
digraph G {
    // Graph properties
    label = "Cluster Example";
    fontsize = 20;

    // Cluster 1
    subgraph cluster_0 {
        style = filled;
        color = lightgrey;
        node [style=filled, color=white];
        label = "Cluster 1";
        
        a0 -> a1 -> a2 -> a3;
    }

    // Cluster 2
    subgraph cluster_1 {
        node [style=filled];
        label = "Cluster 2";
        color = blue;
        
        b0 -> b1 -> b2 -> b3;
    }

    // Connecting nodes between clusters
    a3 -> b0;
}