Two 3x3 grids of black and white squares are combined to create a third grid using an exclusive-OR (XOR) rule: if the squares in the same position on Grid 1 and Grid 2 are different colors, the resulting square is black; if they are the same color, the resulting square is white. If Grid 1 has all black squares and Grid 2 has a white 'X' shape (corners and center are white, others are black), what is the resulting pattern on Grid 3?