Lambda1___B_is_Lambda2 21 21 Lambda2 -1 0 the_lattice_point_paired_with_0 0 0 the_lattice_point_paired_with_Lambda1 2 2 the_lattice_point_paired_with_2Lambda1 42 42 the_lattice_point_paired_with_Lambda2 1 2 the_lattice_point_paired_with_Lambda1+Lambda2 20 21 the_lattice_point_paired_with_2Lambda1+Lambda2 39 40