+                  |
+                  |
-                  |
+                  |
+                  |
+                  |
+                  |
+                  |
+                  |
+                  |
+                  |
+                  |
+                  |
#   h    h     h   |
+ d              e |
+                  |
+        b         |
+ a a              |
+          a       |
*                  |
+ d                |
+        e    e    |
+                  |
+     4            |
+          a    a  |
+  f  f            |
+  f  f      b     |
*                  |
+  a     a     a   |
+     2            |
+  a     a  1  a   |
+                  |
+     f     f      |
+     f     f      |
+                  |
+                  |
2                  |
+                  |
!                  |
+                  |
