A01 = x
A02 = -y
A03 = -(x+1)
A04 = -(x+y)
A05 = x+x-y
A06 = y+y+y-x-x

B01 = -(x)^2
B02 = x*y
B03 = -(x^2+y^2)
B04 = -((x-2)^2+(y-3)^2)
B05 = sin(x)
B06 = (y/3)^2 OR -cos(y/3)

C01 = 1/y
C02 = 1/(x*y)
C03 = 1/(x^2-3)
C04 = ln(x + 2)
C05 = ln(cos(x/3))
C06 = ln(x^2+y^2)

D01 = ln(x*y)
D02 = ln(cos(x)*cos(y))
D03 = cos(x)*ln(y)
D04 = (sqrt(x^2) * y)/x
D05 = y * (sqrt((x*y)^2))/(x*y)
D06 = y * (sqrt(cos(x)^2))/(2*cos(x))