+-- Level +3 ------------------------------------------+
| |
| % % |
| v v |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| % % |
| v v |
| |
+------------------------------------------------------+
+-- Level +2 ------------------------------------------+
| |
| M |
| | |
| ^ | ^ |
| % * % |
| \ | / |
| \ | / |
| %--*--*--*--% |
| v v |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| ^ ^ |
| % % |
| v v |
| |
+------------------------------------------------------+
+-- Level +1 ------------------------------------------+
| ^ ^ |
| % % % |
| | |v | |
| | | | |
| * * * |
| \ | / |
| \ | / |
| *--*--* |
| / v \ |
| / \ |
| * * |
| | | |
| |^ |^ |
| % % |
| |
+------------------------------------------------------+
+-- Ground level --------------------------------------+
| |
| *--*--* *--*--* |
| \ / |
| \ / |
| * * |
| \ / |
| \ / |
| * |
| / \ |
| / \ |
| * * |
| \ / |
| \^/ |
| % |
| /v\ |
| / \ |
| * * |
| \ / |
| \ / |
| * |
| | |
| | |
| *--*--*--*--* |
| | |
| | |
| * |
| | |
| | |
| * |
| | |
| | |
| % * |
| v | |
| | |
| % |
| v |
| |
+------------------------------------------------------+
+-- Level -1 ------------------------------------------+
| |
| * * |
| \ / |
| \ / |
| * * * |
| \/ / |
| /\ / |
| * * |
| / | |
| / | |
| * * *--* *> |
| / \ | /| |
| / \ | / | |
| * * * * * |
| / \ | / | |
| / \|/ | |
| * %^ * |
| / \ |
| / \ |
| * * |
| / \ |
| / \ |
| *--* * * |
| | | / \ |
| | |/ \ |
| * *--* * * |
| | \ | |
| | \ | |
| *--* *--*--* |
| | | |
| | | |
| * * |
| | |
| | |
| %--*--* *--*--* |
| v | |
| ^ | |
| % * |
| | | |
| | | |
| *--* |
| |
+------------------------------------------------------+
+-- Level -2 ------------------------------------------+
| |
| * |
| \ |
| \ |
| * |
| / |
| / |
| *--*--* *--* |
| / \ / | |
| / \^/ | |
| * % * |
| / | / |
| / | / |
| M--*--* * *--*--*--* <* *--* |
| | / | | | | |
| | / | | | | |
| *--* * * * * |
| | \ | |
| | \ | |
| *--* *--*--*--* |
| |\ | |
| | \ | |
| *> * * * |
| |
+------------------------------------------------------+