import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();

        if(S.length() < 6){
            System.out.print("No");
        }else{
            if(S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5)) {
                System.out.print("Yes");
            }else {
                System.out.print("No");
            }
        }
    }
} import java.util.Scanner; Scanner java.util public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();

        if(S.length() < 6){
            System.out.print("No");
        }else{
            if(S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5)) {
                System.out.print("Yes");
            }else {
                System.out.print("No");
            }
        }
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();

        if(S.length() < 6){
            System.out.print("No");
        }else{
            if(S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5)) {
                System.out.print("Yes");
            }else {
                System.out.print("No");
            }
        }
    } main {
        Scanner sc = new Scanner(System.in);
        String S = sc.next();

        if(S.length() < 6){
            System.out.print("No");
        }else{
            if(S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5)) {
                System.out.print("Yes");
            }else {
                System.out.print("No");
            }
        }
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc if(S.length() < 6){
            System.out.print("No");
        }else{
            if(S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5)) {
                System.out.print("Yes");
            }else {
                System.out.print("No");
            }
        } S.length() < 6 S.length() S.length S 6 {
            System.out.print("No");
        } System.out.print("No") System.out.print System.out System System.out "No" {
            if(S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5)) {
                System.out.print("Yes");
            }else {
                System.out.print("No");
            }
        } if(S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5)) {
                System.out.print("Yes");
            }else {
                System.out.print("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.print("Yes");
            } System.out.print("Yes") System.out.print System.out System System.out "Yes" {
                System.out.print("No");
            } System.out.print("No") System.out.print System.out System System.out "No" String[] args args public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();

        if(S.length() < 6){
            System.out.print("No");
        }else{
            if(S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5)) {
                System.out.print("Yes");
            }else {
                System.out.print("No");
            }
        }
    }
} public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();

        if(S.length() < 6){
            System.out.print("No");
        }else{
            if(S.charAt(2) == S.charAt(3) && S.charAt(4) == S.charAt(5)) {
                System.out.print("Yes");
            }else {
                System.out.print("No");
            }
        }
    }
} Main
import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String S = sc.next();

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