b2909 b2908 b2907 b2906
b2909 0 351.576449723243 196.219265109214 715.490740680828
b2908 351.576449723243 0 2.82842712474619 8.66025403784439
b2907 196.219265109214 2.82842712474619 0 8.94427190999916
b2906 715.490740680828 8.66025403784439 8.94427190999916 0