So, suppose I have considered this as a channel. Let us work out on a example I consider this as a channel A infinity B infinity this is my C infinity and this is my D infinity. And here in the zeta plane, I have A infinity this is my D infinity this point suppose this is a B C, this is origin. Suppose, you have a uniform flow in a channel, we consider as a uniform flow in a channel, there is a uniform flow in a channel with parallel sides. And the lines of equal velocity or perpendicular to the sides the inside flow, it can be regard as a due to a source of infinity. So, when I say you a uniform flow as it needs a source infinity and that is. And again this fluid is again moving to this side, and this is there is a resist sink infinity here. The same thing if what will happen here? So, if I put it in this way. So, I can only also say that as it energy fluid is flowing in both from this point. Like this is also it is behaving like this is a uniform flow, but here it will like a source from which the fluid is going out.