Fig 1. Density plots for some $\mathcal{U}\mathcal{R}\mathcal{E}\mathcal{W}$ special models.

(a) $\mathcal{U}\mathcal{R}\mathcal{G}$, (b) $\mathcal{U}\mathcal{R}\mathcal{B}\mathcal{X}\mathcal{I}\mathcal{I}$, (c) $\mathcal{U}\mathcal{R}\mathcal{L}$, (d) $\mathcal{U}\mathcal{R}\mathcal{R}$.