| <!DOCTYPE html> | |
| <style> | |
| div { | |
| width: 10ch; | |
| border: solid; | |
| } | |
| </style> | |
| <p>H should be followed by a hyphen, and x should not.</p> | |
| <div>xxxxxxxxxxxxxxxH-<br>xxxx</div> | |
| <div>xxxxxH-<br>xxxxxxxxxxxxxxxH-<br>xxxx</div> | |
| <div>xxxxxH-<br>xxxxxH-<br>xxxxxxx</div> | |
| <div>xxxxxH-<br>xxxxxxxxxxxxxxxx</div> | |
| <div>xxxxxH-<br>xxxxxxxxxxxxxxxx xxxxxxx</div> |