Now consider the two septics C = U7i=1Ci, D = U7i=1Di and note that for i = 1,2,3,4,5,6 the lines Ci and Di are parallel, so that the intersection of two septics S' consists of 66[sic] + 6 + 1 = 43 points and it is the singular set of a foliation of degree 6.
2003, Antonio Campillo, Santiago Encinas, “Two Dimensional Complete Ideals”, in Luchezar L. Avramov et al., editors, Commutative Algebra: Interactions with Algebraic Geometry: International Conference, page 71