import java.util.*;

public class Atypical {

    static Scanner in = new Scanner(System.in);

    public static void main(String[] args) {
        String s = in.nextLine().toLowerCase();
        s = s.replaceAll("[^atypical]", "");
        if (s.length() < 8) {
            System.out.println("NO");
        } else {
            String t = s;
            boolean b1 = t.replaceAll("[^a]", "").length() >= 2;
            boolean b2 = s.chars().distinct().count() == 7;

            if (b1 && b2) {
                System.out.println("YES");
            } else {
                System.out.println("NO");
            }

        }

    }

}