import java.util.Scanner;

public class Main {


    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String coffeeString = scanner.next();
        if (coffeeString.length() == 6) {

            if (coffeeString.charAt(2) == coffeeString.charAt(3) && coffeeString.charAt(4) == coffeeString.charAt(5)) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        } else {
            System.out.println("No");
        }


    }
} import java.util.Scanner; Scanner java.util public class Main {


    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String coffeeString = scanner.next();
        if (coffeeString.length() == 6) {

            if (coffeeString.charAt(2) == coffeeString.charAt(3) && coffeeString.charAt(4) == coffeeString.charAt(5)) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        } else {
            System.out.println("No");
        }


    }
} Main public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String coffeeString = scanner.next();
        if (coffeeString.length() == 6) {

            if (coffeeString.charAt(2) == coffeeString.charAt(3) && coffeeString.charAt(4) == coffeeString.charAt(5)) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        } else {
            System.out.println("No");
        }


    } main {
        Scanner scanner = new Scanner(System.in);
        String coffeeString = scanner.next();
        if (coffeeString.length() == 6) {

            if (coffeeString.charAt(2) == coffeeString.charAt(3) && coffeeString.charAt(4) == coffeeString.charAt(5)) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        } else {
            System.out.println("No");
        }


    } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) String coffeeString = scanner.next(); coffeeString scanner.next() scanner.next scanner if (coffeeString.length() == 6) {

            if (coffeeString.charAt(2) == coffeeString.charAt(3) && coffeeString.charAt(4) == coffeeString.charAt(5)) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        } else {
            System.out.println("No");
        } coffeeString.length() == 6 coffeeString.length() coffeeString.length coffeeString 6 {

            if (coffeeString.charAt(2) == coffeeString.charAt(3) && coffeeString.charAt(4) == coffeeString.charAt(5)) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        } if (coffeeString.charAt(2) == coffeeString.charAt(3) && coffeeString.charAt(4) == coffeeString.charAt(5)) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            } coffeeString.charAt(2) == coffeeString.charAt(3) && coffeeString.charAt(4) == coffeeString.charAt(5) coffeeString.charAt(2) == coffeeString.charAt(3) coffeeString.charAt(2) coffeeString.charAt coffeeString 2 coffeeString.charAt(3) coffeeString.charAt coffeeString 3 coffeeString.charAt(4) == coffeeString.charAt(5) coffeeString.charAt(4) coffeeString.charAt coffeeString 4 coffeeString.charAt(5) coffeeString.charAt coffeeString 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("No") System.out.println System.out System System.out "No" {
            System.out.println("No");
        } 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 coffeeString = scanner.next();
        if (coffeeString.length() == 6) {

            if (coffeeString.charAt(2) == coffeeString.charAt(3) && coffeeString.charAt(4) == coffeeString.charAt(5)) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        } else {
            System.out.println("No");
        }


    }
} public class Main {


    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String coffeeString = scanner.next();
        if (coffeeString.length() == 6) {

            if (coffeeString.charAt(2) == coffeeString.charAt(3) && coffeeString.charAt(4) == coffeeString.charAt(5)) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        } else {
            System.out.println("No");
        }


    }
} Main
import java.util.Scanner;

public class Main {


    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String coffeeString = scanner.next();
        if (coffeeString.length() == 6) {

            if (coffeeString.charAt(2) == coffeeString.charAt(3) && coffeeString.charAt(4) == coffeeString.charAt(5)) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        } else {
            System.out.println("No");
        }


    }
}