2690 3
2689 7
2689 3
2689 4
2689 8
2687 6
2687 9
2687 1
2686 1
2686 7
2684 6
2684 4
2684 3
2683 7
2683 9
2682 3
2682 7
2682 2
2682 8
2681 3
2680 1
2679 18