import matplotlib.pyplot as plt
from preliz import Dirichlet
_, axes = plt.subplots(2, 2)
alphas = [[0.5, 0.5, 0.5], [1, 1, 1], [5, 5, 5], [5, 2, 1]]
for alpha, ax in zip(alphas, axes.ravel()):
    pz.Dirichlet(alpha).plot_pdf(marginals=False, ax=ax)