massage_morgan2.bgf

<?xml version="1.0" encoding="UTF-8"?>
<bgf:grammar xmlns:bgf="http://planet-sl.org/bgf">
  <bgf:production>
    <nonterminal>foo</nonterminal>
    <bgf:expression>
      <not>
        <bgf:expression>
          <allof>
            <bgf:expression>
              <not>
                <bgf:expression>
                  <nonterminal>foo</nonterminal>
                </bgf:expression>
              </not>
            </bgf:expression>
            <bgf:expression>
              <not>
                <bgf:expression>
                  <nonterminal>bar</nonterminal>
                </bgf:expression>
              </not>
            </bgf:expression>
          </allof>
        </bgf:expression>
      </not>
    </bgf:expression>
  </bgf:production>
</bgf:grammar>