import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String s=scan.nextLine();
		int c=0;
		for(int i=0;i<s.length();i++)
		{
			if(s.charAt(2)==s.charAt(3) && s.charAt(4)==s.charAt(5))c=1; 
		
		}
		if(c==1) System.out.println("Yes");
		else System.out.println("No");

	}

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

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String s=scan.nextLine();
		int c=0;
		for(int i=0;i<s.length();i++)
		{
			if(s.charAt(2)==s.charAt(3) && s.charAt(4)==s.charAt(5))c=1; 
		
		}
		if(c==1) System.out.println("Yes");
		else System.out.println("No");

	}

} Main public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String s=scan.nextLine();
		int c=0;
		for(int i=0;i<s.length();i++)
		{
			if(s.charAt(2)==s.charAt(3) && s.charAt(4)==s.charAt(5))c=1; 
		
		}
		if(c==1) System.out.println("Yes");
		else System.out.println("No");

	} main {
		Scanner scan = new Scanner(System.in);
		String s=scan.nextLine();
		int c=0;
		for(int i=0;i<s.length();i++)
		{
			if(s.charAt(2)==s.charAt(3) && s.charAt(4)==s.charAt(5))c=1; 
		
		}
		if(c==1) System.out.println("Yes");
		else System.out.println("No");

	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) String s=scan.nextLine(); s scan.nextLine() scan.nextLine scan int c=0; c 0 for(int i=0;i<s.length();i++)
		{
			if(s.charAt(2)==s.charAt(3) && s.charAt(4)==s.charAt(5))c=1; 
		
		} int i=0; int i=0; i 0 i<s.length() i s.length() s.length s i++ i++ i {
			if(s.charAt(2)==s.charAt(3) && s.charAt(4)==s.charAt(5))c=1; 
		
		} {
			if(s.charAt(2)==s.charAt(3) && s.charAt(4)==s.charAt(5))c=1; 
		
		} if(s.charAt(2)==s.charAt(3) && s.charAt(4)==s.charAt(5))c=1; 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 c=1 c 1 if(c==1) System.out.println("Yes");
		else System.out.println("No"); c==1 c 1 System.out.println("Yes") System.out.println System.out System System.out "Yes" 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 scan = new Scanner(System.in);
		String s=scan.nextLine();
		int c=0;
		for(int i=0;i<s.length();i++)
		{
			if(s.charAt(2)==s.charAt(3) && s.charAt(4)==s.charAt(5))c=1; 
		
		}
		if(c==1) System.out.println("Yes");
		else System.out.println("No");

	}

} public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String s=scan.nextLine();
		int c=0;
		for(int i=0;i<s.length();i++)
		{
			if(s.charAt(2)==s.charAt(3) && s.charAt(4)==s.charAt(5))c=1; 
		
		}
		if(c==1) System.out.println("Yes");
		else System.out.println("No");

	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String s=scan.nextLine();
		int c=0;
		for(int i=0;i<s.length();i++)
		{
			if(s.charAt(2)==s.charAt(3) && s.charAt(4)==s.charAt(5))c=1; 
		
		}
		if(c==1) System.out.println("Yes");
		else System.out.println("No");

	}

}
