import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        abc160_a solver = new abc160_a();
        solver.solve(1, in, out);
        out.close();
    }

    static class abc160_a {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String[] S = in.next().split("");
            boolean pair1 = false;
            boolean pair2 = false;
            int i = 3;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair1 == false) {
                    pair1 = true;
                }
            }
            i = 5;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair2 == false) {
                    pair2 = true;
                }
            }
            if ((pair1 == true) && (pair2 == true)) {
                out.println("Yes");
            } else {
                out.println("No");
            }
        }

    }
}
 import java.io.OutputStream; OutputStream java.io import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.io.PrintWriter; PrintWriter java.io import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        abc160_a solver = new abc160_a();
        solver.solve(1, in, out);
        out.close();
    }

    static class abc160_a {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String[] S = in.next().split("");
            boolean pair1 = false;
            boolean pair2 = false;
            int i = 3;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair1 == false) {
                    pair1 = true;
                }
            }
            i = 5;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair2 == false) {
                    pair2 = true;
                }
            }
            if ((pair1 == true) && (pair2 == true)) {
                out.println("Yes");
            } else {
                out.println("No");
            }
        }

    }
} Main public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        abc160_a solver = new abc160_a();
        solver.solve(1, in, out);
        out.close();
    } main {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        abc160_a solver = new abc160_a();
        solver.solve(1, in, out);
        out.close();
    } InputStream inputStream = System.in; inputStream System.in System System.in OutputStream outputStream = System.out; outputStream System.out System System.out Scanner in = new Scanner(inputStream); in new Scanner(inputStream) PrintWriter out = new PrintWriter(outputStream); out new PrintWriter(outputStream) abc160_a solver = new abc160_a(); solver new abc160_a() solver.solve(1, in, out) solver.solve solver 1 in out out.close() out.close out String[] args args static class abc160_a {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String[] S = in.next().split("");
            boolean pair1 = false;
            boolean pair2 = false;
            int i = 3;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair1 == false) {
                    pair1 = true;
                }
            }
            i = 5;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair2 == false) {
                    pair2 = true;
                }
            }
            if ((pair1 == true) && (pair2 == true)) {
                out.println("Yes");
            } else {
                out.println("No");
            }
        }

    } abc160_a public void solve(int testNumber, Scanner in, PrintWriter out) {
            String[] S = in.next().split("");
            boolean pair1 = false;
            boolean pair2 = false;
            int i = 3;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair1 == false) {
                    pair1 = true;
                }
            }
            i = 5;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair2 == false) {
                    pair2 = true;
                }
            }
            if ((pair1 == true) && (pair2 == true)) {
                out.println("Yes");
            } else {
                out.println("No");
            }
        } solve {
            String[] S = in.next().split("");
            boolean pair1 = false;
            boolean pair2 = false;
            int i = 3;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair1 == false) {
                    pair1 = true;
                }
            }
            i = 5;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair2 == false) {
                    pair2 = true;
                }
            }
            if ((pair1 == true) && (pair2 == true)) {
                out.println("Yes");
            } else {
                out.println("No");
            }
        } String[] S = in.next().split(""); S in.next().split("") in.next().split in.next() in.next in "" boolean pair1 = false; pair1 false boolean pair2 = false; pair2 false int i = 3; i 3 if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair1 == false) {
                    pair1 = true;
                }
            } S[i - 1].compareToIgnoreCase(S[i]) == 0 S[i - 1].compareToIgnoreCase(S[i]) S[i - 1].compareToIgnoreCase S[i - 1] S i - 1 i 1 S[i] S i 0 {
                if (pair1 == false) {
                    pair1 = true;
                }
            } if (pair1 == false) {
                    pair1 = true;
                } pair1 == false pair1 false {
                    pair1 = true;
                } pair1 = true pair1 true i = 5 i 5 if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair2 == false) {
                    pair2 = true;
                }
            } S[i - 1].compareToIgnoreCase(S[i]) == 0 S[i - 1].compareToIgnoreCase(S[i]) S[i - 1].compareToIgnoreCase S[i - 1] S i - 1 i 1 S[i] S i 0 {
                if (pair2 == false) {
                    pair2 = true;
                }
            } if (pair2 == false) {
                    pair2 = true;
                } pair2 == false pair2 false {
                    pair2 = true;
                } pair2 = true pair2 true if ((pair1 == true) && (pair2 == true)) {
                out.println("Yes");
            } else {
                out.println("No");
            } (pair1 == true) && (pair2 == true) (pair1 == true) pair1 true (pair2 == true) pair2 true {
                out.println("Yes");
            } out.println("Yes") out.println out "Yes" {
                out.println("No");
            } out.println("No") out.println out "No" int testNumber testNumber Scanner in in PrintWriter out out public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        abc160_a solver = new abc160_a();
        solver.solve(1, in, out);
        out.close();
    }

    static class abc160_a {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String[] S = in.next().split("");
            boolean pair1 = false;
            boolean pair2 = false;
            int i = 3;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair1 == false) {
                    pair1 = true;
                }
            }
            i = 5;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair2 == false) {
                    pair2 = true;
                }
            }
            if ((pair1 == true) && (pair2 == true)) {
                out.println("Yes");
            } else {
                out.println("No");
            }
        }

    }
} public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        abc160_a solver = new abc160_a();
        solver.solve(1, in, out);
        out.close();
    }

    static class abc160_a {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String[] S = in.next().split("");
            boolean pair1 = false;
            boolean pair2 = false;
            int i = 3;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair1 == false) {
                    pair1 = true;
                }
            }
            i = 5;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair2 == false) {
                    pair2 = true;
                }
            }
            if ((pair1 == true) && (pair2 == true)) {
                out.println("Yes");
            } else {
                out.println("No");
            }
        }

    }
} Main
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        abc160_a solver = new abc160_a();
        solver.solve(1, in, out);
        out.close();
    }

    static class abc160_a {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            String[] S = in.next().split("");
            boolean pair1 = false;
            boolean pair2 = false;
            int i = 3;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair1 == false) {
                    pair1 = true;
                }
            }
            i = 5;
            if (S[i - 1].compareToIgnoreCase(S[i]) == 0) {
                if (pair2 == false) {
                    pair2 = true;
                }
            }
            if ((pair1 == true) && (pair2 == true)) {
                out.println("Yes");
            } else {
                out.println("No");
            }
        }

    }
}

