b2673 b2674 b2675 b2676
b2673 0 1 3.46410161513775 4.58257569495584
b2674 1 0 1.41421356237309 3.16227766016838
b2675 3.46410161513775 1.41421356237309 0 1.41421356237309
b2676 4.58257569495584 3.16227766016838 1.41421356237309 0