#include <bits/stdc++.h>
using namespace std;
bool checkPalindrome(string str) {
  for (int i = 0; i < str.length(); i++) {
    if (str[i] != str[str.length() - 1 - i]) {
      return false;
    }
  }
  return true;
}
int main() {
  string str;
  cin >> str;
  string temp;
  if (checkPalindrome(str) && str.length() % 2 != 1) {
    cout << "NO";
    return 0;
  }
  for (int i = 0; i < str.length(); i++) {
    temp = str;
    temp[i] = temp[temp.length() - i - 1];
    if (checkPalindrome(temp)) {
      cout << "YES";
      return 0;
    }
  }
  cout << "NO";
  return 0;
}
