+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     "     |     |     "           |     |
|     |     |     "  7  |  4  |  1  " -     -   | -   |
|     |     |     "     |     |     "           |     |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     "     |     |     "           |     |
|  6  |  7  |     "     |  5  |  2  " -     -   | -   |
|     |     |     "     |     |     "           |     |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     "     |     |     "           |     |
|  5  |  8  |  2  "     |     |     " -     -   | -   |
|     |     |     "     |     |     "           |     |
+=====+=====+=====+=====+=====+=====+-----+-----+-----+
|     |     |     "     |     |     "           |     |
|     |     |     "     |     |     " -     -   | -   |
|     |     |     "     |     |     "           |     |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     "     |     |     "           |     |
|     |     |     "     |     |     " -     -   | -   |
|     |     |     "     |     |     "           |     |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     "     |     |     "           |     |
|     |     |     "     |     |     " -     -   | -   |
|     |     |     "     |     |     "           |     |
+=====+=====+=====+=====+=====+=====+-----+-----+-----+
|     |     |     "     |     |     "           |     |
|     |     |     "  3  |  1  |  6  " -     -   | -   |
|     |     |     "     |     |     "           |     |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     "     |     |     "           |     |
|  1  |  6  |     "     |  4  |  5  " -     -   | -   |
|     |     |     "     |     |     "           |     |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     "     |     |     "           |     |
|  4  |  9  |  5  "     |     |     " -     -   | -   |
|     |     |     "     |     |     "           |     |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+