b0231 b0232 b0233 b0234
b0231 0 3.87298334620742 19.7989898732233 66.4680374315355
b0232 3.87298334620742 0 2.82842712474619 47.2863616701476
b0233 19.7989898732233 2.82842712474619 0 5
b0234 66.4680374315355 47.2863616701476 5 0