b4154 b4153 b4152 b4151
b4154 0 1 2.44948974278318 3.87298334620742
b4153 1 0 2 2.44948974278318
b4152 2.44948974278318 2 0 1
b4151 3.87298334620742 2.44948974278318 1 0