import com.sun.security.jgss.GSSUtil;

import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Retake2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String input = scanner.nextLine();
        Pattern pattern1 = Pattern.compile("@+[A-z]{3,}@@[A-z]+@+|#+[A-z]{3,}##[A-z]+#+");
        int count = 0;

        Matcher matcher = pattern1.matcher(input);


        while (matcher.find()) {


            count++;

        }
        System.out.printf("%d word pairs found!", count);
        System.out.println("The mirror words are:");
        System.out.println();
    }

    static boolean isPalindrome(String str) {

        // Pointers pointing to the beginning
        // and the end of the string
        int i = 0, j = str.length() - 1;

        // While there are characters toc compare
        while (i < j) {

            // If there is a mismatch
            if (str.charAt(i) != str.charAt(j))
                return false;

            // Increment first pointer and
            // decrement the other
            i++;
            j--;
        }

        // Given string is a palindrome
        return true;
    }
}
    // Driver code