Remove parent page from URl

Hello
I need to remove parent page from URL.
i have tried few plugin but none is working on latest version of WordPress, The plugin I have tried are
http://wordpress.org/extend/plugins/permalink-editor/
http://wordpress.org/extend/plugins/advanced-permalinks/
http://wordpress.org/extend/plugins/custom-permalinks/
http://wordpress.org/extend/plugins/permalink-editor/

What I am looking for is I have 2 set of page
SET1
-Page 1
-Page 2
SET2
-Page 3
-Page 4
-Page5

When I view page 1 or page 3 the URl should be
http://www.mydomain.com/page1
or
http://www.mydomain.com/page3

What I have gettign now is
http://www.mydomain.com/set1/page1

Thanks in Advance