[ He clicks his tongue and then whistles, because that is a long time, but - ]
Well, it's good you haven't given up. And failure isn't necessarily a bad thing. We can learn from those attempts, to find the way that works. 'If at first you don't succeed, try, try again', right?
[ He is not one to be dissuaded so easily, Chekov. Up to you if that's a good thing or not. ]