.htaccess - Get last part of an URL as GET parameter -

i've got urls this:

http://example.com/foo/bar/de/ http://example.com/foo/bar/en/ 

which rewrite rules have use load url before last "folder" (http://example.com/foo/bar/) , "folder" parameter (e.g. lang=de)

i figured out:

rewriteengine on rewriterule ^language/(.*)$ index.php?l=$1 

now can open urls http://example.com/foo/bar/language/de/ browser loads http://example.com/foo/bar/index.php?l=de