<image>As shown in the figure, four electronic pets are seated: at the beginning, the mouse, monkey, rabbit, and cat are seated at positions 1, 2, 3, and 4 respectively. After that, they keep exchanging positions: in the first exchange, the positions of the two rows are swapped; in the second exchange, after the first row swap, the positions of the two columns are swapped; in the third exchange, after the second column swap, the positions of the two rows are swapped again; in the fourth exchange, after the third row swap, the positions of the two columns are swapped again; and so on. This process continues indefinitely. After the 2016th exchange, the position of the mouse is ____.