+-------+-------+-------+
| _ _ _ | _ _ _ | _ _ _ |
| _ _ _ | _ _ _ | _ _ _ |
| _ _ _ | _ _ _ | _ _ _ |
+-------+-------+-------+
| _ _ _ | _ _ _ | _ _ _ |
| _ _ _ | _ _ _ | _ _ _ |
| _ _ _ | _ _ _ | _ _ _ |
+-------+-------+-------+
| _ _ _ | _ _ _ | _ _ _ |
| _ _ _ | _ _ _ | _ _ _ |
| _ _ _ | _ _ _ | _ _ _ |
+-------+-------+-------+
