+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     "     |     "     |     "     |     "           |
|  5  "  1  |  2  "  5  |  1  "  6  |  5  " -     -   |
|     "     |     "     |     "     |     "           |
+=====+=====+=====+=====+=====+=====+=====+=====+=====+
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|  1  "  6  |  5  "  3  |  4  "  6  |  4  "  3  |  2  |
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+=====+=====+=====+=====+=====+=====+=====+=====+=====+
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+     +=====+=====+=====+=====+=====+=====+=====+=====+
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+-----+-----+-----+-----+-----+-----+-----+-----+-----+