Hi,
I think I would create a separate column for each of the countries you want stacked underneath each other vertically, and then save these as a table at the end. Something like this;
Countries1 = {'1.Algeria';'9.ChinaHK';'17.India'} Countries2 = {'2.Argentina';'10.Columbia';'18.Inmysgth'} Countries3 = {'3.Australia';'11.Denmark';'19.Ireland'} Countries = table(Countries1,Countries2,Countries3)