using System;
 
namespace Program
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] tab = {"a;a", "b;a", "c;a"};
            string[][] tab2 = new string[3][];
            int licznik = 0;
            foreach(string elem in tab)
                tab2[licznik++] = elem.Split(';');
                
            foreach(string[] t in tab2)
                foreach(string e in t)
                    Console.WriteLine(e);
        }
    }
}