import java.io.*;
import java.math.*;
import java.util.*;
public class GFG {
public static boolean test(String a, String b)
{
int l = 0;
int okay = 0;
int countdiff = 0;
whereas (l < a.size()) {
if (okay < b.size()
&& a.charAt(l) == b.charAt(okay)) {
l++;
okay++;
}
else {
l++;
countdiff++;
}
}
return countdiff <= 1;
}
public static void primary(String args[])
{
int N = 5;
String s = "ababz";
if (s.size() == 1) {
System.out.println("NO");
}
else if (s.size() % 2 == 0) {
String fir = s.substring(0, (s.size() / 2));
String sec = s.substring((s.size() / 2));
if (fir.equals(sec)) {
System.out.println("YES");
}
else {
System.out.println("NO");
}
}
else {
String fir = s.substring(0, s.size() / 2 + 1);
String sec = s.substring(s.size() / 2 + 1);
String third = s.substring(s.size() / 2);
String fourth = s.substring(0, s.size() / 2);
if (test(fir, sec) || test(third, fourth)) {
System.out.println("YES");
}
else {
System.out.println("NO");
}
}
}
}
