Things that Spread the Difference

Their their.
Their theres not mine.
They're there.
There there not here. OK.
There but.
There not existing any.
There is, there is that hope over there.
Is there a dark place?
Up there differing from down.
There or Look! It is.
There had been the here & now.
There you go.
So there.
There there. It's OK.
A . . . . Z