import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        System.out.println(S.length()<6 ? "No" : S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5) ? "Yes" : "No") ;
    }
} import java.util.Scanner; Scanner java.util public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        System.out.println(S.length()<6 ? "No" : S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5) ? "Yes" : "No") ;
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        System.out.println(S.length()<6 ? "No" : S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5) ? "Yes" : "No") ;
    } main {
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        System.out.println(S.length()<6 ? "No" : S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5) ? "Yes" : "No") ;
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc System.out.println(S.length()<6 ? "No" : S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5) ? "Yes" : "No") System.out.println System.out System System.out S.length()<6 ? "No" : S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5) ? "Yes" : "No" S.length()<6 S.length() S.length S 6 "No" S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5) ? "Yes" : "No" S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5) S.charAt(2) == S.charAt(3) S.charAt(2) S.charAt S 2 S.charAt(3) S.charAt S 3 S.charAt(4) == S.charAt(5) S.charAt(4) S.charAt S 4 S.charAt(5) S.charAt S 5 "Yes" "No" String[] args args public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        System.out.println(S.length()<6 ? "No" : S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5) ? "Yes" : "No") ;
    }
} public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        System.out.println(S.length()<6 ? "No" : S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5) ? "Yes" : "No") ;
    }
} Main
import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        System.out.println(S.length()<6 ? "No" : S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5) ? "Yes" : "No") ;
    }
}