#include <iostream>
#include <string.h>
using namespace std;
 
bool ispalindrome(char* s, int l, int r)
{
	int n = r-l+1;
	for(int i=0; i<n/2; i++)
	{
		if(s[l+i] != s[r-i])
			return false;
	}
 
	for(int i=l; i<=r; i++)
		cout << s[i];
	cout << endl;
	return true;
}
void palindromesubstrings(char* s)
{
	int n = strlen(s);
	for(int i=0; i<n; i++)
	{
		for(int j=i+1; j<n; j++)
		{
			if(s[i] == s[j])
			{
				//cout << "[" << i << "," << j << "]=" << s[i] << endl;
				ispalindrome(s,i,j);
			}
		}
	}
}
 
int main() {
	// your code goes here
	char s1[100], s2[100];
	cin >> s1;
	cin >> s2;
	//cout << "palindrome " << s1 << " " << (ispalindrome(s1,0,strlen(s1)-1)? "true" : "false");
	cout << "palindrome substrings of " << s2 << ":\n";
	palindromesubstrings(s2);
	return 0;
}

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