import java.util.*;enum M{M;System z;int i;{for(Scanner s=new Scanner(z.in);i<1;z.out.println("Why, "+(i<0?"no":"yes")+", good sir or madam, this list is "+(i<0?"not ":"")+"in fact a palindrome")){String[]a=s.nextLine().split("\\W");i=(a[1]+a[3]).indexOf(a[i=a.length-1]+a[i-2]);}}}