In Vim, is it possible to “move” a window to the left or right? Eg, similar to <c-w> r or <c-w> x , but left/right instead of up/down?

For example, if I've got this layout:

+---+---+---+ | | +---+ | A +---+---+ | | | | +---+---+---+

I'd like to turn it into this:

+---+---+---+ | | +---+ +---+ A +---+ | | | | +---+---+---+