在SQL中查找匹配间隔 - Oracle

I have a table:

我有一张桌子：

table:

表：

start         end
1 Jan 09    31 Jan 2009
1 Feb 09    28 Feb 2009
1 Mar 09    31 Mar 2009
1 Apr 09    01 May 2009
1 May 09    31 May 2009
1 Jun 09    01 Jul 2009
1 Jul 09    31 Jul 2009
1 Aug 09    31 Aug 2009
1 Sep 09    01 Oct 2009
1 Oct 09    31 Oct 2009
1 Nov 09    01 Dec 2009
1 Dec 09    31 Dec 2009
1 Jan 10    31 Jan 2010
1 Feb 10    03 Mar 2010
1 Mar 10    31 Mar 2010
1 Apr 10    01 May 2010
1 May 10    31 May 2010
1 Jun 10    01 Jul 2010
1 Jul 10    31 Jul 2010
1 Aug 10    31 Aug 2010
1 Sep 10    01 Oct 2010
1 Oct 10    31 Oct 2010
1 Nov 10    01 Dec 2010
1 Dec 10    31 Dec 2010
1 Jan 09    31 Mar 2009
1 Apr 09    30 Jun 2009
1 Jul 09    01 Oct 2009
1 Oct 09    31 Dec 2009
1 Jan 10    31 Mar 2010
1 Apr 10    30 Jun 2010
1 Jul 10    01 Oct 2010
1 Oct 10    31 Dec 2010
1 Jan 09    31 Dec 2009
1 Jan 10    31 Dec 2010
start