<!DOCTYPE html>
<style>
td { text-align: center; }
.parent {
box-sizing: border-box;
width: 50px;
height: 50px;
border: solid;
position: relative;
}
.child {
position: absolute;
width: 10px;
height: 10px;
background: green;
}
.top-left {
top: 0;
left: 0;
}
.top-right {
top: 0;
right: 0;
}
.bottom-left {
bottom: 0;
left: 0;
}
.bottom-right {
bottom: 0;
right: 0;
}
</style>
<table>
<tr>
<td></td>
<td colspan=2>LTR</td>
<td colspan=2>RTL</td>
</tr>
<tr>
<td></td>
<td>Y</td>
<td>X</td>
<td>Y</td>
<td>X</td>
</tr>
<tr>
<td>HTB</td>
<td>
<div class="parent" style="writing-mode: horizontal-tb; direction: ltr; overflow-y: scroll;">
<div class="child top-left"></div>
<div class="child top-right"></div>
<div class="child bottom-left"></div>
<div class="child bottom-right"></div>
</div>
</td>
<td>
<div class="parent" style="writing-mode: horizontal-tb; direction: ltr; overflow-x: scroll;">
<div class="child top-left"></div>
<div class="child top-right"></div>
<div class="child bottom-left"></div>
<div class="child bottom-right"></div>
</div>
</td>
<td>
<div class="parent" style="writing-mode: horizontal-tb; direction: rtl; overflow-y: scroll;">
<div class="child top-left"></div>
<div class="child top-right"></div>
<div class="child bottom-left"></div>
<div class="child bottom-right"></div>
</div>
</td>
<td>
<div class="parent" style="writing-mode: horizontal-tb; direction: rtl; overflow-x: scroll;">
<div class="child top-left"></div>
<div class="child top-right"></div>
<div class="child bottom-left"></div>
<div class="child bottom-right"></div>
</div>
</td>
</tr>
<tr>
<td>VRL</td>
<td>
<div class="parent" style="writing-mode: vertical-rl; direction: ltr; overflow-y: scroll;">
<div class="child top-left"></div>
<div class="child top-right"></div>
<div class="child bottom-left"></div>
<div class="child bottom-right"></div>
</div>
</td>
<td>
<div class="parent" style="writing-mode: vertical-rl; direction: ltr; overflow-x: scroll;">
<div class="child top-left"></div>
<div class="child top-right"></div>
<div class="child bottom-left"></div>
<div class="child bottom-right"></div>
</div>
</td>
<td>
<div class="parent" style="writing-mode: vertical-rl; direction: rtl; overflow-y: scroll;">
<div class="child top-left"></div>
<div class="child top-right"></div>
<div class="child bottom-left"></div>
<div class="child bottom-right"></div>
</div>
</td>
<td>
<div class="parent" style="writing-mode: vertical-rl; direction: rtl; overflow-x: scroll;">
<div class="child top-left"></div>
<div class="child top-right"></div>
<div class="child bottom-left"></div>
<div class="child bottom-right"></div>
</div>
</td>
</tr>
<tr>
<td>VLR</td>
<td>
<div class="parent" style="writing-mode: vertical-lr; direction: ltr; overflow-y: scroll;">
<div class="child top-left"></div>
<div class="child top-right"></div>
<div class="child bottom-left"></div>
<div class="child bottom-right"></div>
</div>
</td>
<td>
<div class="parent" style="writing-mode: vertical-lr; direction: ltr; overflow-x: scroll;">
<div class="child top-left"></div>
<div class="child top-right"></div>
<div class="child bottom-left"></div>
<div class="child bottom-right"></div>
</div>
</td>
<td>
<div class="parent" style="writing-mode: vertical-lr; direction: rtl; overflow-y: scroll;">
<div class="child top-left"></div>
<div class="child top-right"></div>
<div class="child bottom-left"></div>
<div class="child bottom-right"></div>
</div>
</td>
<td>
<div class="parent" style="writing-mode: vertical-lr; direction: rtl; overflow-x: scroll;">
<div class="child top-left"></div>
<div class="child top-right"></div>
<div class="child bottom-left"></div>
<div class="child bottom-right"></div>
</div>
</td>
</tr>
</table>