3 greens,
You're misunderstanding INNUENDO'S suggestion (fact).
Here at DFW we have five parallel north/south runways.
Obviously, you can't have (say) 18 outside R, 18 inside R, 18C, 18 inside L and 18 outside L so the "west" runways are even numbers and the "east" side runways are odd. All have a magnetic alignment of 174/354 degrees.
Hence, from east to west (facing south) they're numbered 17L, 17C, 17R,
and, 18L, 18R.
From time to time, (nameless)airlines still do land on the wrong runways but it's usually when they've mistaken 17R for 17C.
Cheers,dd