{{ 1,-1,0.02,0.07}{ 2,1,0.02,0.07}{ 3,2,0.02,0.07}{ 4,3,0.02,0.07}{ 5,4,0.02,0.07}{ 6,5,0.02,0.07}{ 7,6,0.02,0.07}{ 8,7,0.02,0.07}}