import java.util.*;

class Palindrome {
    private String sentence, answer;
    private int frequency;

    public Palindrome(String sentence) {
        this.sentence = sentence;
        frequency = 0;
        answer = "";
        process();
    }

    private boolean isPalindrome(String word) {
        int half = word.length() / 2;
        for (int position = 0; position < half; position++) {
            if (word.charAt(position) != word.charAt(word.length() - 1 - position))
                return false;
        }
        return true;
    }

    private void process(){
        char ch;
        String delimters=".?! ",word="";
        for( int position=0; position<sentence.length();position++){
            ch = sentence.charAt(position);
            if(delimters.indexOf(ch)>=0){
                if(isPalindrome(word)){
                    answer+=word+" ";
                    frequency++;
                }
                word="";
            }else{
                word+=ch;
            }
        }
    }
    public int getFrequency(){
        return frequency;
    }
    public String toString(){
        return answer.trim();
    }
}

public class ISC2013Q3 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.print("INPUT:\t");
        String sentence = in.nextLine();
        Palindrome objPalindrome = new Palindrome(sentence);
        System.out.print("OUTPUT:\t");
        if(objPalindrome.getFrequency()>0){
            System.out.println(objPalindrome);
            System.out.println("\tNUMBER OF PALINDROMIC WORDS: "+objPalindrome.getFrequency());
        }else{
            System.out.println("NO PALINDROMIC WORDS");
        }
        in.close();
    }
}