The Five Pillars

Ok, I think this may be a stupid question, but what lands are allied/against what? All the guides say to get so many of your manaland, your ally manalands, and opposite manalands... But I don't see anywhere that says what magic type is allied with what... Sorry if it's obvious, but it'd be useful info

red is black and green
black is red and blue
blue is all colors
white is blue and green
green is white and red

Or as someone once mentioned to me the color above and below your color is the ones you are allied with.

It just makes it a bit easier to remember then having to come back here.