<!-- Already indented, and should stay so.. -->
<mixedContent>
    <p>char1<span/></p>
    <p><span/>char2</p>
    <p>char3<span/>char3</p>
    <p>
        <e1>
            char 4
        </e1>
        <e2>
            <p>char1<span/></p>
            <p><span/>char2</p>
            <p>char3<span/>char3</p>
        </e2>
    </p>
</mixedContent>