b2131 b2130 b2129 b2128
b2131 0 18.7616630392937 99.3478736561583 31.890437438204
b2130 18.7616630392937 0 2 2.44948974278318
b2129 99.3478736561583 2 0 1
b2128 31.890437438204 2.44948974278318 1 0