import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String s = scanner.nextLine().toLowerCase();
        boolean flag = false;
        if (s.charAt(2)==s.charAt(3)&&s.charAt(4)==s.charAt(5)){
            System.out.println("Yes");
        }else
            System.out.println("No");
    }
} import java.util.ArrayList; ArrayList java.util import java.util.Arrays; Arrays java.util import java.util.HashMap; HashMap java.util import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String s = scanner.nextLine().toLowerCase();
        boolean flag = false;
        if (s.charAt(2)==s.charAt(3)&&s.charAt(4)==s.charAt(5)){
            System.out.println("Yes");
        }else
            System.out.println("No");
    }
} Main public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String s = scanner.nextLine().toLowerCase();
        boolean flag = false;
        if (s.charAt(2)==s.charAt(3)&&s.charAt(4)==s.charAt(5)){
            System.out.println("Yes");
        }else
            System.out.println("No");
    } main {
        Scanner scanner = new Scanner(System.in);

        String s = scanner.nextLine().toLowerCase();
        boolean flag = false;
        if (s.charAt(2)==s.charAt(3)&&s.charAt(4)==s.charAt(5)){
            System.out.println("Yes");
        }else
            System.out.println("No");
    } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) String s = scanner.nextLine().toLowerCase(); s scanner.nextLine().toLowerCase() scanner.nextLine().toLowerCase scanner.nextLine() scanner.nextLine scanner boolean flag = false; flag false if (s.charAt(2)==s.charAt(3)&&s.charAt(4)==s.charAt(5)){
            System.out.println("Yes");
        }else
            System.out.println("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 {
            System.out.println("Yes");
        } System.out.println("Yes") System.out.println System.out System System.out "Yes" System.out.println("No") System.out.println System.out System System.out "No" String[] args args public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String s = scanner.nextLine().toLowerCase();
        boolean flag = false;
        if (s.charAt(2)==s.charAt(3)&&s.charAt(4)==s.charAt(5)){
            System.out.println("Yes");
        }else
            System.out.println("No");
    }
} public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String s = scanner.nextLine().toLowerCase();
        boolean flag = false;
        if (s.charAt(2)==s.charAt(3)&&s.charAt(4)==s.charAt(5)){
            System.out.println("Yes");
        }else
            System.out.println("No");
    }
} Main
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String s = scanner.nextLine().toLowerCase();
        boolean flag = false;
        if (s.charAt(2)==s.charAt(3)&&s.charAt(4)==s.charAt(5)){
            System.out.println("Yes");
        }else
            System.out.println("No");
    }
}
