INSERT INTO t2 (a, b, c, d) VALUES (0,0,0,0);
INSERT INTO t2 (a, b, c, d) VALUES (0,0,1,1);
INSERT INTO t2 (a, b, c, d) VALUES (0,1,2,2);
INSERT INTO t2 (a, b, c, d) VALUES (0,1,3,3);
INSERT INTO t2 (a, b, c, d) VALUES (1,1,4,4);
