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 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 System.out System System.out "Yes" 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");}
	}
}