<mixedContent>
    <p>char1<span/>
    </p>
    <p>
        <span/>char2</p>
    <p>char3<span/>char3</p>
    <p>
        <e1>char4</e1>
        <e2>
            <p>char1<span/>
            </p>
            <p>
                <span/>char2</p>
            <p>char3<span/>char3</p>
        </e2>
    </p>
</mixedContent>