A right angled triangle GHI is to be formed in a rectangular coordinate system such that the triangle is right angled at H and HI is parallel to the Y axis. It is also intended for the x and the y coordinates of G, H and I to satisfy the following inequalities. x must lie between -8 and 8 (both inclusive) and y must lie between 7 and 15 (both inclusive). How many such triangles can be formed?

(A) 78

(B) 1224

(C) 19584

(D) 20566

(E) 30126

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