{{ 1,-1,0.001,0.01}{ 2,1,0.001,0.01}{ 3,2,0.001,0.01}{ 4,3,0.001,0.01}{ 5,4,0.001,0.01}{ 6,5,0.001,0.01}{ 7,6,0.001,0.01}{ 8,7,0.001,0.01}}