+-----+-----+-----+-----+-----+-----+-----+
|     |     "     "     |     "     |     |
| -   | -   "     "  7  |     "     | -   |
|     |     "     "     |     "     |     |
+=====+=====+-----+=====+-----+=====+=====+
|     |     |     "     "     |     |     |
|     |     |  5  "     "  8  |     |     |
|     |     |     "     "     |     |     |
+-----+-----+-----+=====+-----+-----+=====+
|     |     |     |     "     |     "     |
|     |     |     |     "     |     "     |
|     |     |     |     "     |     "     |
+=====+=====+=====+=====+-----+=====+-----+
|     |     |     "     "     "     |     |
|     |  2  |     "     "     "  3  |     |
|     |     |     "     "     "     |     |
+-----+-----+=====+     +=====+-----+-----+
|     |     "     "     "     |     |     |
|  5  |     "     " -   "     |     |  2  |
|     |     "     "     "     |     |     |
+-----+-----+-----+=====+=====+-----+-----+
|     |     "     |     |     "     |     |
|     |     "     |     |     "     |     |
|     |     "     |     |     "     |     |
+=====+-----+-----+-----+-----+=====+=====+
|     "     "     |     |     |     "     |
| -   "  4  "     |  1  |     |  8  "     |
|     "     "     |     |     |     "     |
+-----+-----+-----+-----+-----+-----+-----+