b1279 b1280 b1281 b1282
b1279 0 1 3176.55473744747 3614.65268041066
b1280 1 0 564.977875673021 2395.26491228006
b1281 3176.55473744747 564.977875673021 0 5.8309518948453
b1282 3614.65268041066 2395.26491228006 5.8309518948453 0