yet another performance improvement

main.py

@@ -131,10 +131,17 @@ def build_network(n):
             #if lvl(i) == lvl(i - l_lvl) and l_lvl:
             join_nodes(g, nn(i, 'lu'), nn(neigh(i, -l_lvl * 2), 'ld'))
 
+            join_nodes(g, nn(i, 'rs'), nn(neigh(i, +l_lvl * 3), 'ls'))
+            join_nodes(g, nn(i, 'ls'), nn(neigh(i, -l_lvl * 5), 'rs'))
+
             # irregular: inline ring
             join_nodes(g, nn(i, 'rs'), nn(neigh(i, +1), 'ls'), 5)
             join_nodes(g, nn(i, 'ls'), nn(neigh(i, -1), 'rs'), 5)
 
+            #if l_lvl >= 4:
+                #join_nodes(g, nn(i, 'rs'), nn(neigh(i, +12), 'ls'), 6)
+                #join_nodes(g, nn(i, 'ls'), nn(neigh(i, -12), 'rs'), 6)
+
     return g
 
 def analyze(G: nx.Graph) -> dict:
@@ -269,7 +276,7 @@ def test2():
     print(set([v for i, v in g.degree()]))
 
 def test3():
-    g = build_network(7)
+    g = build_network(3)
     visualize(g)
 
 if __name__=="__main__":