lambda1 2 2 lambda2 -1 1 the_lattice_point_paired_with_0 1 1 the_lattice_point_paired_with_lambda1 2 3 the_lattice_point_paired_with_2lambda1 3 3 the_lattice_point_paired_with_lambda2 -1 1 the_lattice_point_paired_with_lambda1+lambda2 0 2 the_lattice_point_paired_with_2lambda1+lambda2 3 4