import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String line = sc.nextLine();
        String[] word = line.split("");
        if(word[2].equals(word[3]) && word[4].equals(word[5])) {
            System.out.println("Yes");   
        }else {
            System.out.println("No");
        }
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String line = sc.nextLine();
        String[] word = line.split("");
        if(word[2].equals(word[3]) && word[4].equals(word[5])) {
            System.out.println("Yes");   
        }else {
            System.out.println("No");
        }
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String line = sc.nextLine();
        String[] word = line.split("");
        if(word[2].equals(word[3]) && word[4].equals(word[5])) {
            System.out.println("Yes");   
        }else {
            System.out.println("No");
        }
    } main {
        Scanner sc = new Scanner(System.in);
        String line = sc.nextLine();
        String[] word = line.split("");
        if(word[2].equals(word[3]) && word[4].equals(word[5])) {
            System.out.println("Yes");   
        }else {
            System.out.println("No");
        }
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String line = sc.nextLine(); line sc.nextLine() sc.nextLine sc String[] word = line.split(""); word line.split("") line.split line "" if(word[2].equals(word[3]) && word[4].equals(word[5])) {
            System.out.println("Yes");   
        }else {
            System.out.println("No");
        } word[2].equals(word[3]) && word[4].equals(word[5]) word[2].equals(word[3]) word[2].equals word[2] word 2 word[3] word 3 word[4].equals(word[5]) word[4].equals word[4] word 4 word[5] word 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 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String line = sc.nextLine();
        String[] word = line.split("");
        if(word[2].equals(word[3]) && word[4].equals(word[5])) {
            System.out.println("Yes");   
        }else {
            System.out.println("No");
        }
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String line = sc.nextLine();
        String[] word = line.split("");
        if(word[2].equals(word[3]) && word[4].equals(word[5])) {
            System.out.println("Yes");   
        }else {
            System.out.println("No");
        }
    }
} Main
import java.util.*;

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