

				<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified"
					targetNamespace="foo" xmlns="foo">
					
					<xs:complexType name="B" block="extension">
						<xs:sequence>
							<xs:element name="foo" type="empty"/>
						</xs:sequence>
					</xs:complexType>
					
					<xs:complexType name="Dr">
						<xs:complexContent>
							<xs:restriction base="B">
								<xs:sequence>
									<xs:element name="foo" type="empty"/>
								</xs:sequence>
							</xs:restriction>
						</xs:complexContent>
					</xs:complexType>
					
					<xs:complexType name="De">
						<xs:complexContent>
							<xs:extension base="B" />
						</xs:complexContent>
					</xs:complexType>
					
					<xs:complexType name="Drr">
						<xs:complexContent>
							<xs:restriction base="Dr">
								<xs:sequence>
									<xs:element name="foo" type="empty"/>
								</xs:sequence>
							</xs:restriction>
						</xs:complexContent>
					</xs:complexType>
					
					<xs:complexType name="Dre">
						<xs:complexContent>
							<xs:extension base="Dr" />
						</xs:complexContent>
					</xs:complexType>
					
					<xs:complexType name="Der">
						<xs:complexContent>
							<xs:restriction base="De">
								<xs:sequence>
									<xs:element name="foo" type="empty"/>
								</xs:sequence>
							</xs:restriction>
						</xs:complexContent>
					</xs:complexType>
					
					<xs:complexType name="Dee">
						<xs:complexContent>
							<xs:extension base="De" />
						</xs:complexContent>
					</xs:complexType>
					
					<xs:complexType name="empty"/>
					
					
					<xs:element name="root">
						<xs:complexType>
							<xs:sequence maxOccurs="unbounded">
								<xs:element name="item" type="B"/>
							</xs:sequence>
						</xs:complexType>
					</xs:element>
				</xs:schema>