<div   class="ex">
    <span>3</span>
    <span class="sp1">1</span>
    <span>22222222222</span>
    <span>3</span>
    <span>3</span>
    <span>3</span>
    <span>3</span>
    <div class="subEx">
        <span>4</span>
        <span>5</span>
    </div>
</div>

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