Lambda1___B_is_0 0 21 Lambda2 -1 0 the_lattice_point_paired_with_0 0 1 the_lattice_point_paired_with_Lambda1 0 21 the_lattice_point_paired_with_2Lambda1 0 41 the_lattice_point_paired_with_Lambda2 0 2 the_lattice_point_paired_with_Lambda1+Lambda2 -1 21 the_lattice_point_paired_with_2Lambda1+Lambda2 -1 42