在聊天里下一局五子棋

我们来下五子棋。游戏目标是在 9×9 棋盘上横向、纵向或斜向连成五子。每次落子后打印棋盘（坐标轴为 ABCDEFGHI/123456789，用 x 和 o 表示棋子，用 - 表示空白）。你和我轮流落子，也就是说，每次我落子后你再落子。不能在已有棋子上落子。落子前不要修改原始棋盘。现在请先落子。

Let's play Gomoku. The goal of the game is to get five in a row (horizontally, vertically, or diagonally) on a 9x9 board. Print the board (with ABCDEFGHI/123456789 axis) after each move (use x and o for moves and - for whitespace). You and I take turns in moving, that is, make your move after my each move. You cannot place a move an top of other moves. Do not modify the original board before a move. Now make the first move.