<?xml version="1.0" encoding="UTF-8"?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="nschoice" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="a">
    <xs:complexType>
      <xs:choice maxOccurs="unbounded" minOccurs="0">
        <xs:element ref="cch:c" xmlns:cch="cChoice"/>
        <xs:element ref="nsc:d" xmlns:nsc="nschoice"/>
        <xs:element ref="nch:c" xmlns:nch="nChoice"/>
        <xs:element ref="cch:x" xmlns:cch="cChoice"/>
        <xs:element ref="nsc:c" xmlns:nsc="nschoice"/>
        <xs:element ref="dch:d" xmlns:dch="dChoice"/>
      </xs:choice>
    </xs:complexType>
  </xs:element>
  <xs:element name="c" type="xs:string" xmlns:xs="http://www.w3.org/2001/XMLSchema"/>
  <xs:element name="d" type="xs:string" xmlns:xs="http://www.w3.org/2001/XMLSchema"/>
</xs:schema>