BRANCH_NODE(0, 1, 2)
	BRANCH_NODE(1, 3, 4)
	BRANCH_NODE(2, 5, 6)
	BRANCH_NODE(3, 7, 8)
	BRANCH_NODE(4, 9, 10)
	BRANCH_NODE(5, 11, 12)
	LEAF_NODE  (6, 1)
	BRANCH_NODE(7, 13, 14)
	BRANCH_NODE(8, 15, 16)
	BRANCH_NODE(9, 17, 18)
	LEAF_NODE  (10, 3)
	LEAF_NODE  (11, 2)
	LEAF_NODE  (12, 0)
	BRANCH_NODE(13, 19, 20)
	BRANCH_NODE(14, 21, 22)
	BRANCH_NODE(15, 23, 24)
	LEAF_NODE  (16, 6)
	LEAF_NODE  (17, 5)
	LEAF_NODE  (18, 4)
	BRANCH_NODE(19, 25, 26)
	BRANCH_NODE(20, 27, 28)
	LEAF_NODE  (21, 10)
	LEAF_NODE  (22, 9)
	LEAF_NODE  (23, 8)
	LEAF_NODE  (24, 7)
	BRANCH_NODE(25, 29, 30)
	LEAF_NODE  (26, 13)
	LEAF_NODE  (27, 12)
	LEAF_NODE  (28, 11)
	LEAF_NODE  (29, 15)
	LEAF_NODE  (30, 14)