fig = plt.figure(figsize = (22, 12))

fig.subplots_adjust(hspace = 0.4, wspace = 0.3)

for i, feature in enumerate(regional.columns[3:14]):

    ax = fig.add_subplot(4, 3, i+1 )

    ax = sns.violinplot(data = regional, x= 'Continent', y = feature, palette = 'Set2', inner = 'quartile')