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

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

    } main { 
		Scanner sc = new Scanner(System.in);
String s=sc.nextLine();
if((s.charAt(2)==s.charAt(3)&&s.charAt(4)==s.charAt(5))){
    System.out.println(" Yes ");
}
else
            System.out.println(" No ");

    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s=sc.nextLine(); s sc.nextLine() sc.nextLine sc if((s.charAt(2)==s.charAt(3)&&s.charAt(4)==s.charAt(5))){
    System.out.println(" Yes ");
}
else
            System.out.println(" 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.println(" Yes ");
} 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 sc = new Scanner(System.in);
String s=sc.nextLine();
if((s.charAt(2)==s.charAt(3)&&s.charAt(4)==s.charAt(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 s=sc.nextLine();
if((s.charAt(2)==s.charAt(3)&&s.charAt(4)==s.charAt(5))){
    System.out.println(" Yes ");
}
else
            System.out.println(" No ");

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

    } 
}