|<| 1 |>|..
|<| 2 |>|..
|<| 3 |>|..
|<| 4 |>|..
|<| 5 |>|..
|<| 6 |>|..
|<| 7 |>| . . |^|..
|<| 8 |>|..
|<| 9 |^|..|<|