DROP TABLE STATS;
CREATE TABLE stats 
( even		number,
  odd 		number
);

insert into stats values(2,1);
insert into stats values(NULL,3);
insert into stats values(6,5);
insert into stats values(8, NULL);
insert into stats values(10,9);
insert into stats values(NULL,11);
insert into stats values(14,NULL);
insert into stats values(16,15);