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"); } } }