 Maybe I will start and then Pierre will continue or this will be a very spontaneous presentation and very subjective way of presenting what from our point of view is important in the history. So I think it's important for us to say that we met first time in 1985 in rewriting techniques and application conference in Dijon and it was my first paper accepted. And after many years I learned that Pierre was in a committee and he was responsible for acceptance of this paper so thank you Pierre. And it was my first visit in France and at that time it was it was not easy to travel. So the next important date so it was 1985 so it's 35 years ago. Next important date is 1989 when the communists collapsed in Poland and starting from this we could travel with no problems. In 2001 Pierre contacted me that there is a possibility to get some grant money from the region of Ronald in Lyon and if we get this money we can organize meetings and we can exchange ideas. And the first project which was founded was called the Chacali. It's Chambéry Cracovilion. In fact Pierre has an ability to find very nice names for projects. So this was the first one 2001 and then we have in 2002 another project called Mikołaj which is the first name of Copernicus in Polish. So Nicolaus Copernicus is Mikołaj Copernic in Polish and this project also was founded and then we joined four cities Lyon, Chambéry Cracovilion and Novi Sad at that time. Another project on 2004 was called Lambda for a reason you can understand. I think those are the projects which we from money from this from from from those projects was spent to mostly to travel from France to Poland and from Poland to France. From my perspective the first I will say something which is important for me. In the year 2000 I get the accepted paper which was published in mathematical structure in computer science. The paper is about statistical properties of simple types and this paper was inspired by the question of Richard Statman and solved the problem what is the density of inhabited types inside all types and I'm very happy that Rick Statman will present some paper on this conference after so many years he decided to join this place. Then we have every year or every two years we have meetings which we started to call CLA for the first time in 2002. This was CLA in Cracov. Then in 2004 we have meeting in Lyon and in this meeting first time we met Philippe Flageulaire which was kind of a person which inspired us and in 2005 we met first time in Chambéry and this was a very important meeting because Pierre has an idea to invite somebody from not from our group and he decided to invite Daniel Gardy and we met first time Daniel Gardy in 2005 in Chambéry and this was kind of very important. He was very important for us because she changed our view to how to use analytic combinatorics in logic when we enumerate objects, logical kind of objects. What else? We met in 2006 in Versailles and was also connected with meeting of colloquium of mathematics and computer science and meeting with Philippe Flageulaire. We met also in 2007 in Chambéry again and then there was several meetings in Cracov in 2007, first time Bernard Gittenberger visited CLA and then we met also Antoine Genitrini who is I think here. Olivier Bodigny appeared in Cracov in 2010 then in 2011 there was the CLA in Vienna and I remember that Kasia Grigiel was first time visited CLA in Vienna and then in 2012 there was a CLA organized by me in Cracov and an important meeting was 2015 in Lyon where first time I met Noam and Alain Giorgetti and I think Michał Alka also appeared in this meeting. Then we met in 2016 in Noviçat where first time I met Paul Tarau. I don't know if Paul is with us right now, probably no and then we met in 2017 in Göteborg. This meeting was organized by Michał Alka. In fact Michał Alka is my student. He studied in Cracov and then he left to Sweden and then we have our last three meetings in two meetings in France in Paris 2018 and 2019 in Versailles. That's more or less my view on this on this history and maybe I would like to to exchange ideas right now with Pierre. Maybe Pierre, do you want to add something? Oh yes, hello everybody. Oh yes, I would like to comment about the reason why I contacted Marek for the first time in 2000. It's rather bureaucratic country and a region like Ronald cannot found university but they found that but anyway the the council wanted to held the university on cooperation so they found the trick that this corporation it was not really a support for university but it was a support for cooperation with the twin region. And Maja Polska, the region of Cracov, was in a twin region with Ronald for this reason they accepted to support. This was on the list of possible cooperation or I thought that it would be a good a good way to for that and also to support a cooperation with Cerberi. Also that created because Cerberi is also in the same Rodalper region and so that was the beginning of a long long cooperation and it's very interesting that for some detail, political details that as such a cooperation could be started. And another anecdote is when we created TLA, Marek wanted to have to have a paper to have the paper after that published on a journal on a support and for that the paper has to be referred and once I was in charge of the of referring referring the the paper of one of Marek students and I have some questions so I decided to ask my friend Philippe Flageollet and he said why why are you interested by this problem because apparently I was known as a person not so interested by this. I say oh I have to read this paper. So Philippe read it and make a long long comment for the students so that was also that was I would say the second starting of the of the cooperation on what is now known as computational logic and application. That's all. Yes technically if I can solve my problem currently I have connected through my my smartphone but if I can connect my computer I have a picture of two CLA namely CLA 2005 and CLA 2004. So the one the 2004 was I think the first one we organized in yo on 2005 was the one which was in Chaberry we were where Daniel Gardi but if I hope that I will solve solve my problem and we can display the picture during the break. Sorry just wanted to say Pierre if you send us the photos by email then maybe we could put them on the webpage. Okay okay okay yes I put some pictures from the very early stage of CLA so I can send you and also we we make some notes which is called points in history and and we can send you also this one page history of CLA so I think that's that's more or less all. Okay thank you so it would be really nice if you could send us the notes and the pictures so everything can appear on the website. Okay are there any questions to this short talk about CLA? Actually I can ask about comments because there are I see that there are some participants this year who attended many editions so I guess some of you can contribute something to this this talk. Okay I can give a comment. There are other pictures which I don't have then then send it to Noam and then see from other pictures from other perspectives also. Okay I have a short comment because there was a mistake Marek in your in your talk namely you said that I attended CLA for the first time in 2011 it was 2007 so I have to admit I'm much older than you think. 2007 so okay so sorry sorry you are older than I expected. Yeah I know it's always like this. Okay so I changed this in my notes. Okay so as far as I know now we have a short break so everybody is invited to have some coffee on their own or tea or whatever you like and of course this meeting will be on all the time so I have a short notice so those of you who have not registered yet please do that because then you can get all the info. Is there any changes in the program or whatever happens if you are registered we have you on our mailing list so it's it's convenient for both for you and for us. Okay so now we have a break for 13 more minutes. Thanks.