<?xml  version="1.0"?>
<!-- valid test for Production 56-->
<!DOCTYPE root
 [
 <!ELEMENT root (a|b|c|d|e|f|g)*>
 <!ELEMENT a EMPTY>
 <!ELEMENT b EMPTY>
 <!ELEMENT c EMPTY>
 <!ELEMENT d EMPTY>
 <!ELEMENT e EMPTY>
 <!ELEMENT f EMPTY>
 <!ELEMENT g EMPTY>
 <!ATTLIST a attr ID #IMPLIED>
 <!ATTLIST b attr IDREF #IMPLIED>
 <!ATTLIST c attr IDREFS #IMPLIED>
 <!ATTLIST d attr ENTITY #IMPLIED>
 <!ATTLIST e attr ENTITIES #IMPLIED>
 <!ATTLIST f attr NMTOKEN #IMPLIED>
 <!ATTLIST g attr NMTOKENS #IMPLIED>
 ]>
<root/>