list(
alpha0 = 0, alpha1 = 0, alpha2 = 0, alpha12 = 0, tau = 1,
b = c(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0))