using System;

public class Program

{

  private static void strperm(String str,  

                                int j, int k)  

    {  

        if (j == k)  

            Console.WriteLine(str);  

        else

        {  

            for (int i = j; i <= k; i++)  

            {  

                str = swapper(str, j, i);  

                strperm(str, j + 1, k);  

                str = swapper(str, j, i);  

            }  

        }  

    }  

    public static String swapper(String a,  

                            int i, int j)  

    {  

        char temp;  

        char[] charArray = a.ToCharArray();  

        temp = charArray[i] ;  

        charArray[i] = charArray[j];  

        charArray[j] = temp;  

        string s = new string(charArray);  

        return s;  

    }  

    public static void Main()  

    {  

        String str = "java";  

        int l = str.Length;  

        strperm(str, 0, l-1);  

    }  

}