Why nothing is printed on the console?

I create 2 methods that print x and y 100 times. I want them to run concurrent and I expect the output to be xxxxyxyxyyyxyyxyx... sthg like that. It doesn't print anything. Am I missing some logic here?

using System;
using System.Threading.Tasks;

namespace ConsoleApplication32
{
    internal class Program
    {
        public static async Task<int> Print1()
        {
            await Task.Run(() =>
            {
                for (int i = 0; i < 100; i++)
                {
                    Console.Write("x");
                }
            });

            return 1;
        }

        public static async Task<int> Print2()
        {
            await Task.Run(() =>
            {
                for (int i = 0; i < 100; i++)
                {
                    Console.Write("y");
                }
            });

            return 1;
        }

        public static void Run()
        {
            Task<int> i = Print1();
            Task<int> k = Print2();
        }

        private static void Main(string[] args)
        {
            Run();
        }
    }
}