Okay, Pierre let me just try to – there's a lot in there, let me try to hit these. So first I want to just maybe address the framing of the question. When we said profile in 2020, similar to 2019, that was kind of a percent split across device types. I think it's too early to be point specific on the aggregate dollar amount of WFE spend. But what we want to do though is communicate in an attempt to be helpful, communicate about what we see and hear from our customers and what we're see and hear in our business and then extrapolate that towards a view on a market. So what do we see in our business? We see Q1 of our fiscal year our semi-related businesses, SSG and AGS, up 18% year-over-year. Q2 we saw strong demand, but we're actually supply chain limited. Despite that, we were up 13% year-over-year in those two businesses. So the first half of our fiscal year, we're up about 16% year-over-year in our semi-related business. We enter Q3, record backlog in those two businesses. And based on what we're seeing and hearing from customers, we're planning for Q3 to be up sequentially. And then we're expecting it to be up again in Q4. And our view for the fiscal year is strong double digit growth of our systems business. Now, as we think about WFE in the back half of the year, the best framing that I can give you, independent of what we see and hear from our customers because we feel good about our business. What we see and hear, I'm sorry, what we – the best way to frame the back half of WFE, I think, there's going to be two factors that influence WFE in the back half of the year. There's what the customers do and then there's what the supply chain does as it gets healthier. And we know and are aware of the economic, macroeconomic environment. We're aware of what's going on. We see pluses and minuses, cloud, data center, PC, comm infrastructure, are still showing signs of strength. It's offset by softness in things like auto, industrial, consumer, travel, leisure. So we do have that push and pull from a macro environment standpoint and we see those pluses and minuses playing out in the market. Too early for us to decide how that ultimately plays out. Then you have to overlay the comments we made on the supply chain. The combination of those two will influence the shape of WFE in the back half of the year. That said, we feel good about where we sit looking into our Q3 and our Q4.