using System;
using System.IO;
using System.Linq;
using System.Collections.Generic;
using System.Text;

public class Program
{

    public void Proc()
    {
        string inpt = Reader.ReadLine();
        this.Text = inpt;
        long ans = GetAns(0);
        Console.WriteLine(ans);
    }

    private string Text;

    private Dictionary<int, long> dic = new Dictionary<int, long>();

    private long Mod = 1000000000 + 7;
    private long GetAns(int idx) {
        if(dic.ContainsKey(idx)) {
            return dic[idx];
        }
        long ans = 1;
        for (int i = 1; (idx+i)*2<=Text.Length; i++) {
            string txt1 = Text.Substring(idx, i);
            string txt2 = Text.Substring(Text.Length - idx - i, i);
            if(txt1.Equals(txt2)) {
                ans += GetAns(idx + i);
                ans = ans % Mod;
            }
        }
        dic[idx] = ans;
        return ans;
    }



    public class Reader
    {
        private static StringReader sr;
        public static bool IsDebug = false;
        public static string ReadLine()
        {
            if (IsDebug)
            {
                if (sr == null)
                {
                    sr = new StringReader(InputText.Trim());
                }
                return sr.ReadLine();
            }
            else
            {
                return Console.ReadLine();
            }
        }
        private static string InputText = @"




aba





";
    }

    public static void Main(string[] args)
    {
#if DEBUG
        Reader.IsDebug = true;
#endif
        Program prg = new Program();
        prg.Proc();
    }
}