[tw5] Question on multiple filter lists and their display in a table

Hi,

I’m sure this is a basic question, but my TW skill level is not very high…

Here’s the use case I have in mind:

I have three tiddlers:
-TidA tagget “a”
-TidB tagget “b”
-TidC tagget “a”

I want to create a table with two columns, the first to list all tiddlers tagged with “a” and the second to list all tiddlers tagged with “b”.

I created a fourth tiddler in which I created the table with this content:

<$list filter="[!is[system]tag[a]sort[title]]" variable="taga"> <$list filter="[!is[system]tag[b]sort[title]]" variable="tagb">
Tag_a Tag_b
<$link to=< <$link to=

Problem (but normal !) ! My table displays two lines like this:

TidA | TidB |
TidC | TidB |

So i’m looking for a tip or an advice which would avoid to show duplicate TidB on the second row.
In short, this result:

Tag_a |Tag_b|
TidA | TidB |
TidC | |

So I’m looking for a solution or advice to avoid duplicating TidB on the second line.
Any help would be welcome.

Thank you and have a good day !