import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.ArrayList;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String str = scanner.nextLine();
        String[] array = str.split("");
        if (array[2].equals(array[3])){
            if (array[4].equals(array[5])){
                System.out.println("Yes");
            }else {
                System.out.println("No");
            }
        }else {
            System.out.println("No");
        }

    }
} import java.math.BigDecimal; BigDecimal java.math import java.math.RoundingMode; RoundingMode java.math import java.util.ArrayList; ArrayList 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 str = scanner.nextLine();
        String[] array = str.split("");
        if (array[2].equals(array[3])){
            if (array[4].equals(array[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 str = scanner.nextLine();
        String[] array = str.split("");
        if (array[2].equals(array[3])){
            if (array[4].equals(array[5])){
                System.out.println("Yes");
            }else {
                System.out.println("No");
            }
        }else {
            System.out.println("No");
        }

    } main {
        Scanner scanner = new Scanner(System.in);
        String str = scanner.nextLine();
        String[] array = str.split("");
        if (array[2].equals(array[3])){
            if (array[4].equals(array[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 str = scanner.nextLine(); str scanner.nextLine() scanner.nextLine scanner String[] array = str.split(""); array str.split("") str.split str "" if (array[2].equals(array[3])){
            if (array[4].equals(array[5])){
                System.out.println("Yes");
            }else {
                System.out.println("No");
            }
        }else {
            System.out.println("No");
        } array[2].equals(array[3]) array[2].equals array[2] array 2 array[3] array 3 {
            if (array[4].equals(array[5])){
                System.out.println("Yes");
            }else {
                System.out.println("No");
            }
        } if (array[4].equals(array[5])){
                System.out.println("Yes");
            }else {
                System.out.println("No");
            } array[4].equals(array[5]) array[4].equals array[4] array 4 array[5] array 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 str = scanner.nextLine();
        String[] array = str.split("");
        if (array[2].equals(array[3])){
            if (array[4].equals(array[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 str = scanner.nextLine();
        String[] array = str.split("");
        if (array[2].equals(array[3])){
            if (array[4].equals(array[5])){
                System.out.println("Yes");
            }else {
                System.out.println("No");
            }
        }else {
            System.out.println("No");
        }

    }
} Main
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.ArrayList;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String str = scanner.nextLine();
        String[] array = str.split("");
        if (array[2].equals(array[3])){
            if (array[4].equals(array[5])){
                System.out.println("Yes");
            }else {
                System.out.println("No");
            }
        }else {
            System.out.println("No");
        }

    }
}