How to show category and its posts in table output

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Hello, couldn’t find this anywhere. I would like to show categories in table format. Each category in a row. Also all posts in a “subrow”. Output would be like this:
<table>
<tr><td colspan=12>Category Months of year 2018</td></tr>
<tr>
<td>Post January</td>
<td>Post February</td>
…
<td>Post December</td>
</tr>
</tr>
<tr><td colspan=12>Category Months of year 2017</td></tr>
<tr>
<td>Post January</td>
<td>Post February</td>
…
<td>Post December</td>
</tr>
</table>