list(
alpha0 = 0, alpha1 = 0, alpha2 = 0, alpha12 = 0, sigma = 1,
beta = c(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0))