import java.util.Scanner;
class Main {
	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);

		String s = stdIn.nextLine();

		if (s.length() < 5) {
			System.out.println("No");;
		} else 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 class Main {
	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);

		String s = stdIn.nextLine();

		if (s.length() < 5) {
			System.out.println("No");;
		} else 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 stdIn = new Scanner(System.in);

		String s = stdIn.nextLine();

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

		String s = stdIn.nextLine();

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

		String s = stdIn.nextLine();

		if (s.length() < 5) {
			System.out.println("No");;
		} else if (s.charAt(2) == s.charAt(3) && s.charAt(4) == s.charAt(5)) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}
}