b1164 b1165 b1166 b1167
b1164 0 1 2 4.58257569495584
b1165 1 0 1.41421356237309 3.16227766016838
b1166 2 1.41421356237309 0 1.73205080756888
b1167 4.58257569495584 3.16227766016838 1.73205080756888 0