34:14 Yes, Keith, good morning. This is Bill. I'll start and then Kevin can jump in. To your point, we've been very pleased with our ability to manage price inflation, particularly over the last couple of quarters in the second half of the fiscal year. And you've seen that reflected in the step-up in gross margins. Just thinking about it from a year-over-year perspective, we grew gross margins by one hundred and ten basis points in Q3 over the prior year. And then that stepped up to one hundred and sixty basis points in Q4. So really pleased with the work of our teams in the field. And I think that demonstrates again the product availability that we have and the strength of our supply chain. 34:54 We see those -- as we've seen inflation increase, as we mentioned, growing to eight percent in Q4, we see those characteristics holding true as we enter into this fiscal year. And so, I think there is a pretty supportive pricing environment, particularly in the first half of this fiscal year. As we turn to the second half of the fiscal year, the comparables get tougher, both from a revenue perspective, inclusive of inflation, and those gross margin comparables get tougher. 35:21 So I do think you'll see a bit of a difference kind of half one to half two, but again, we think from an overarching perspective pleased with gross margins and how they've stepped up, really pleased with how that dropped through to the bottom line with one hundred and twenty basis point expansion in trading margin. Again, which is a record for our business at nine point two percent. And we're going to work diligently to maintain that trading margin from a full-year perspective as we move forward. 35:53 And Keith, when you think about the operational cost side of the business, just like many of our competitors and even our customers are feeling the pinch from a labor perspective, and what rising wages look like. There certainly will be some pressures that will largely be offset as we think about productivity, but also in the rising price that Bill referenced from an inflation perspective. 36:17 Typically and predominantly what we're seeing is, pressure on, call it, the less than one year driver and warehouse associate. The culture of Ferguson is extremely strong and so when an associate comes on board and is with us for more than a year, there is a great likelihood that that is a career orientation as we look forward, but that less than one year and the competitive environment for that type of associates out there and it will have some degree of cost pressure as we think about wage growth in our business.