using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        string s ="This is a Station called South Yarra";

        List<string> arr = s.Split(' ').Where(x => x.Contains('a')).ToList();

        foreach(string item in arr)

            Console.WriteLine(item);

    }

}