private static int[][] mirrorVertically(int[][] squares) {
		int[][] mirrorVertically = new int[4][4];
		for (int row = 0; row < 4; row++) {
		    for (int col = 0; col < 4; col++) {
		    	mirrorVertically[row][3-col] = squares[row][col];
		    }
		}
		return mirrorVertically;
	}