2687 0
2686 2
2684 1
2684 3
2682 1
2682 2
2682 0
2681 1
2680 0
2680 3
2680 2
2679 3
2678 1
2677 1
2676 0
2675 3
2674 0
2673 3
2671 1
2670 3