<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="nsA" targetNamespace="nsA">

	<xs:complexType name="C1">
		<xs:simpleContent>
			<xs:extension base="xs:integer">
				<xs:attribute name="A1" type="xs:integer"/>
				<xs:attribute name="A2" type="xs:integer"/>
			</xs:extension>
		</xs:simpleContent>
	</xs:complexType>

	<xs:complexType name="C2">
		<xs:simpleContent>
			<xs:restriction base="C1">
				<xs:minInclusive value="23"/>
				<xs:maxInclusive value="26"/>
				<xs:attribute name="A1" type="xs:byte" use="required"/>
				<xs:attribute name="A2" type="xs:negativeInteger"/>
			</xs:restriction>
		</xs:simpleContent>
	</xs:complexType>

	<xs:complexType name="C3">
		<xs:simpleContent>
			<xs:restriction base="C2">
				<xs:minInclusive value="25"/>
				<xs:maxInclusive value="26"/>
			</xs:restriction>
		</xs:simpleContent>
	</xs:complexType>

</xs:schema>