g13.y
g13.x
g12.y
g12.x
g11.y
g11.x
g10.y
g10.x
g9.y
g9.x
g8.y
g8.x
g7.y
g7.x
g6.y
g6.x
g5.y
g5.x
g4.y
g4.x
g3.y
g3.x
g2.y
g2.x
g1.y
g1.x
Descartes