(α, 1, 0)

(x, 1)

(x, 1)

(1 + x)/2, (1 + x)/2)

(1, x)

(x, 1)

(y, z)

(0, 1, α)

(x, 1),

(x, 1)

(x, 1)

(u, v)

(x/2, 1/2)

(0, 0)

(α, 0, 1)

(y, z))

(0, 0)

(1, x)

(1/2, x/2)

(0, 0)

(0, 0

(0, α, 1)

(x, 1)

(x/2, 1/2)

(s, t)

(0, 0)

(0, 0)

(0, 0)