looping, moving through elements??

Ihave this xml (simplified):
<vss>
<ve pos"1">content1</ve>
<ve pos"1.1">content1.1</ve>
<ve pos"1.1.1">content1.1.1</ve>
<ve pos"1.1.1.1">content1.1.1.1</ve>
<ve pos"1.1.2">content1.1.2</ve>
<ve pos"1.1.2.1">content1.1.2.1</ve>
<ve pos"1.1.2.2">content1.1.2.2</ve>
<ve pos"1.2">content1.2</ve>
<ve pos"1.2.1">content1.2.1</ve>
<ve pos"1.2.1.1">content1.2.1.1</ve>
<ve pos"1.2.1.2">content1.2.1.2</ve>
<ve pos"1.2.1.3">content1.2.1.3</ve>
<ve pos"1.2.2">content1.2.2</ve>
<ve pos"1.2.2.1">content1.2.2.1</ve>
<ve pos"1.3">content1.3</ve>
<ve pos"1.3.1">content1.3.1</ve>
<ve pos"1.3.1.1">content1.3.1.1</ve>
<ve pos"2">content2</ve>
<ve pos"2.1">content2.1</ve>
<ve pos"2.1.1">content2.1.1</ve>
<ve pos"2.1.1.1">content2.1.1.1</ve>
</vss>

and i wanted to produce this ouput:
<table>
<tr>
<td>content1</td>
<td>content1.1</td>
<td>content1.1.1</td>
<td>content1.1.1.1</td>
</tr>
<tr>
<td>content1.1.2</td>
<td>>content1.1.2.1</td>
</tr>
<tr>
<td>content1.1.2.2</td>
</tr>
<tr>
<td>content1.2</td>
<td>content1.2.1</td>
<td>content1.2.1.1</td>
</tr>
<tr>
<td>content1.2.1.2</td>
</tr>
<tr>
<td>content1.2.1.3</td>
</tr>
<tr>
<td>content1.2.2</td>
<td>content1.2.2.1</td>
</tr>
<tr>
<td>content1.3</td>
<td>content1.3.1</td>
<td>content1.3.1.1</td>
</tr>
<tr>
<td>content2</td>
<td>content2.1</td>
<td>content2.1.1</td>
<td>content2.1.1.1</td>
</tr>
</table>