Yes. So let me give us a little bit of color around OpEx and free cash flow. So throughout 2022, we were continuing to increase our OpEx, particularly in engineering. The G&A has been flat now for about a year. Sales has been relatively flat. Marketing we have added to in the fourth quarter, but we're not expecting that to grow at all going forward. So the real -- any growth in OpEx into 2023 over and above the exit rate is really in next-gen products in R&D. So it reflects NoC5 that we've talked about, for example, which doesn't have a revenue impact until in the second half you pointed out and then it increases sequentially quarter-over-quarter after that as the higher [SPs] kick in. But of course, we have the OpEx throughout the year. And then we have some -- we've invested quite heavily into marketing -- into digital marketing, product marketing, and sort of customer positioning marketing, which is all about increasing our positioning with customers. And part of the results you saw that was the OEM engagement, the OEM partnership that we announced earlier on that we expect to have some -- not in substantial upside even as we speak and then more certain in the future in the automotive space. And then you mentioned -- you mentioned cash flow. So the -- a lot of science people will ask -- so how would you -- I mean, I also have the same question, how can you go from a negative 8% to a negative 8% guided on free cash flow? -- part of that, you have to take into account that we have this advanced payment from customers, which we weren't expecting right at the death of 2022, which is around $2.5 million. So the negative $7.8 million that we actually reported for 2022, underlying was actually a negative 10.3%, which is exactly in line with our Q3 guidance for the full year. If you then add that back to 2023, what we should have had in 2023 instead of negative 8.5%, we end up with negative 6%. So really, underlying you've got an improvement from 10% -- negative 10.5% to negative 6%. And the majority of that negative cash flow for 2023 is taking place in the first quarter, which as you can see from the first quarter guidance of -- which is approximately negative $8 million and the rest of 2023, therefore, is guided to be relatively flat in terms of free cash flow, which puts us in a very good place, we think, to be cash flow neutral during 2024 and then cash flow positive thereafter.