import java.util.Scanner;

public class MainMogujie {

public static int resoult(char[] data1,int every){

int body=0;

for(char a='a';a<='z';a++){

char[] temp=new char[data1.length+1];

for(int j=0;j<=data1.length;j++){

if(j<every){

temp[j]=data1[j];

}else if(j==every){

temp[j]=a;

}else{

temp[j]=data1[j-1];

}

}

boolean res=false;

for(int k=0;k<temp.length/2;k++){

if(temp[k]!=temp[temp.length-1-k]){

res=true;

break;

}

}

if(!res){

body++;

}

}

return body;

}

public static void main(String[] args) {

// TODO Auto-generated method stub

int sum=0;

Scanner input=new Scanner(System.in);

char[] data=input.nextLine().toCharArray();

for(int i=0;i<=data.length;i++){

sum=sum+resoult(data,i);

}

if(sum>0){

System.out.println("YES");

}else{

System.out.println("No");

}

}

}