b0854 b0855 b0856 b0857
b0854 0 1 1.41421356237309 5.74456264653803
b0855 1 0 2 2.44948974278318
b0856 1.41421356237309 2 0 1.73205080756888
b0857 5.74456264653803 2.44948974278318 1.73205080756888 0