x1 X2 3 x4 1324 0 16261 895 06.2E-15 1.333-0.670.333 0.070.2591.148-0.11 0.37-0.30.259-0.44 3411 0.259-0.41-0.52-0.11x1 x2 x3 x4 2 1 -5 1 8 8 1 -3 0 -6 9 9 0 2 -1 2 -5 -5 1 4 -7 6 0 6.2E-15 1.333 -0.67 0.333 -1 3 -0.07 0.259 1.148 -0.11 -4 0.37 -0.3 0.259 -0.44 -1 0.259 -0.41 -0.52 -0.11 1