This is just so everyone can get an idea of what elements work better against another. This is not like pokemon where the attack power is up'ed against those who are weak but rather a generalization of what elements properties are better suited then others to beat other elements. I am sticking to fire beats water though >_> no competition but it's not to say fire cant beat water or cant find some way to do some real damage to it. If you want to know what elements a dragons own element is good against find it on the top and then go down till you find the element it would be against. So without further ado:
X means non-efficient O means efficient T means it is resistant to the general element