
import java.util.Scanner;
public class Main {

	@SuppressWarnings("resource")
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		String S=sc.next();
		String T[]=S.split("");
		if(T[2].equals(T[3])&&T[4].equals(T[5])) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}

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

	@SuppressWarnings("resource")
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		String S=sc.next();
		String T[]=S.split("");
		if(T[2].equals(T[3])&&T[4].equals(T[5])) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}

	}
} Main @SuppressWarnings("resource")
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		String S=sc.next();
		String T[]=S.split("");
		if(T[2].equals(T[3])&&T[4].equals(T[5])) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}

	} main {
		Scanner sc=new Scanner(System.in);
		String S=sc.next();
		String T[]=S.split("");
		if(T[2].equals(T[3])&&T[4].equals(T[5])) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}

	} Scanner sc=new Scanner(System.in); sc new Scanner(System.in) String S=sc.next(); S sc.next() sc.next sc String T[]=S.split(""); T S.split("") S.split S "" if(T[2].equals(T[3])&&T[4].equals(T[5])) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		} T[2].equals(T[3])&&T[4].equals(T[5]) T[2].equals(T[3]) T[2].equals T[2] T 2 T[3] T 3 T[4].equals(T[5]) T[4].equals T[4] T 4 T[5] T 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" String[] args args public class Main {

	@SuppressWarnings("resource")
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		String S=sc.next();
		String T[]=S.split("");
		if(T[2].equals(T[3])&&T[4].equals(T[5])) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}

	}
} public class Main {

	@SuppressWarnings("resource")
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		String S=sc.next();
		String T[]=S.split("");
		if(T[2].equals(T[3])&&T[4].equals(T[5])) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}

	}
} Main

import java.util.Scanner;
public class Main {

	@SuppressWarnings("resource")
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		String S=sc.next();
		String T[]=S.split("");
		if(T[2].equals(T[3])&&T[4].equals(T[5])) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}

	}
}