x = 0 0 0 0 1 1 1 1
y = 0 0 1 1 0 0 1 1
z = 0 1 0 1 0 1 0 1
x v y * z
y*z = 0 0 0 1 0 0 0 1
x v (y*z) = 0 0 0 1 1 1 1 1
( x v y) * z
x v y = 0 0 1 1 1 1 1 1
( x v y) * z = 0 0 0 1 0 1 0 1
x = 0 0 0 0 1 1 1 1
y = 0 0 1 1 0 0 1 1
z = 0 1 0 1 0 1 0 1
x v y * z
y*z = 0 0 0 1 0 0 0 1
x v (y*z) = 0 0 0 1 1 1 1 1
( x v y) * z
x v y = 0 0 1 1 1 1 1 1
( x v y) * z = 0 0 0 1 0 1 0 1