We have a table:

<table>
<tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>
    <td>4</td>
    <td>5</td>
    <td>6</td>
    <td>7</td>
    <td>8</td>
    <td>9</td>
    <td>10</td>
</tr>
</table>

We update this table by throwing into each <tr> only 3 <td>.

It must look like:

<table>
<tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>
</tr>
<tr>
    <td>4</td>
    <td>5</td>
    <td>6</td>
</tr>
<tr>
    <td>7</td>
    <td>8</td>
    <td>9</td>
</tr>
<tr>
    <td>10</td>
</tr>
</table>

How can we do this?

Thanks.