test/VC/ElementValid7 - third_party/libxml2 - Git at Google

 <!DOCTYPE doc [
 <!ELEMENT doc ((a | b)* , c+, a, b?, c, a?)>
 <!ELEMENT a EMPTY>
 <!ELEMENT b (#PCDATA)>
 <!ELEMENT c (#PCDATA)>
 ]>
 <doc><a/><b/><a/><c/><c/><a/></doc>
	<!DOCTYPE doc [
	<!ELEMENT doc ((a \| b)* , c+, a, b?, c, a?)>
	<!ELEMENT a EMPTY>
	<!ELEMENT b (#PCDATA)>
	<!ELEMENT c (#PCDATA)>
	]>
	<doc><a/><b/><a/><c/><c/><a/></doc>