/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static String foo(String s, String find)
	{
		String arr[] = s.split("\\.");
		for (int i = 1; i < arr.length - 1; i++)
		{
			if (arr[i].indexOf(find) != -1)
				return arr[i - 1] + "." + arr[i] + "." + arr[i + 1];
		}
		return "";
	}
	public static void main (String[] args) throws java.lang.Exception
	{
		String str = "Abc.Def.Ghk.Gml.Zkb.";
		String input = "e";
		String result = foo(str, input);
		System.out.println(result);
	}
}

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