import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    final Scanner scanner = new Scanner(System.in);
    final String s = scanner.nextLine();

    System.out.println(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) {
    final Scanner scanner = new Scanner(System.in);
    final String s = scanner.nextLine();

    System.out.println(s.charAt(2) == s.charAt(3) && s.charAt(4) == s.charAt(5) ? "Yes" : "No");
  }
} Main public static void main(String[] args) {
    final Scanner scanner = new Scanner(System.in);
    final String s = scanner.nextLine();

    System.out.println(s.charAt(2) == s.charAt(3) && s.charAt(4) == s.charAt(5) ? "Yes" : "No");
  } main {
    final Scanner scanner = new Scanner(System.in);
    final String s = scanner.nextLine();

    System.out.println(s.charAt(2) == s.charAt(3) && s.charAt(4) == s.charAt(5) ? "Yes" : "No");
  } final Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) final String s = scanner.nextLine(); s scanner.nextLine() scanner.nextLine scanner System.out.println(s.charAt(2) == s.charAt(3) && s.charAt(4) == s.charAt(5) ? "Yes" : "No") System.out.println System.out System System.out 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) {
    final Scanner scanner = new Scanner(System.in);
    final String s = scanner.nextLine();

    System.out.println(s.charAt(2) == s.charAt(3) && s.charAt(4) == s.charAt(5) ? "Yes" : "No");
  }
} public class Main {
  public static void main(String[] args) {
    final Scanner scanner = new Scanner(System.in);
    final String s = scanner.nextLine();

    System.out.println(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) {
    final Scanner scanner = new Scanner(System.in);
    final String s = scanner.nextLine();

    System.out.println(s.charAt(2) == s.charAt(3) && s.charAt(4) == s.charAt(5) ? "Yes" : "No");
  }
}