The other half.
v
x
y
u
= donÕt care
uÕvÕy
vxÕyÕ
ux
Final expression: uÕvÕy + vxÕyÕ + ux
vs. original
uÕ vÕ wÕ x + uÕ v wÕ xÕ + u vÕ w xÕ