equation icon  2 * 3 guu = - 1 - r E + O(r ), (207) 2-2 * * 3 gua = - _O_a + 3r (Ea + B a) + O(r ), (208) 1 gab = dab - _O_a_O_b - -r2(E *ab + B*ab) + O(r3). (209) 3