import java.util.Scanner;
import java.util.Arrays;

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

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

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

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

}
} Main
import java.util.Scanner;
import java.util.Arrays;

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

}
}