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