2687 0
2687 2
2686 0
2686 3
2685 0
2685 1
2684 3
2684 2
2683 2
2683 0
2682 3
2682 2
2682 4
2682 1
2681 1
2681 2
2681 3
2680 3
2680 0
2680 1