8 6 8 -1.5692 20 -2.3546 28.2843 -2.89502 20.6155 -0.243386 20.6155 -4.7108 20 -3.9254 28.2843 -3.38498 20.6155 -6.03661 20.6155 0 1 2 2 3 0 2 3 6 3 7 6 4 5 6 6 7 4 0 1 1 2 2 3 3 0 4 5 5 6 6 7 7 4 