"Where, oh where, are you tonight?
Why did you leave me here all alone?
I searched the world over and thought I found true love.
You met another and PTHHP! you was gone."
Does that bring back any memories? I thought of it when I was pondering where exactly the different coffees of the world come from. I found a map on Wikipedia to show you.
r = robusta
m = both robusta and arabica
a = arabica