to the best of my knowledge it means nothing.
It is easy for me to say it.
My Extra is still in process. I will look into changing it again if I can find somethng easy to say. k2rh can be fun but is taking as well is w2rh. kd2rh is not but kd2kdk is easier to say and has a ring to it.
If anyone can come up with available cool 1x2 or 2x2 don't hesitate, let me know about it.