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