Another vanilla solution which reproduce my first attempt with [metro] and [moses]:

I've just type "moses" in a translator and so understand this object name…

Thanks for the replies !

You're right @oid I'll try to be more explicit next time.

A second [counter] is a good solution, I found another one:

[for++] is from iemlib
NB : my own Bible is https://puredata.info/docs/ListOfPdExternals/

Hi,
the fourth [counter] outlet count overflows but I can't see how to set it back to 0.

I'm trying to run throw lines and columns with this :

Thanks !