#include <iostream>
#include <string>
using namespace std;
 
void print_all_x_at_the_end ( string &s, const string &originalString, int index, int xCount, int currentIndex ) {
	if ( index == originalString.size() ) {
		string xString = s;
		for ( int i = 0 ; i < xCount ; i++ ) {
			xString = xString + "x";
		}
		xString[xString.size()] = '\0';
		cout << xString << endl;
		return;
	}
	if ( originalString[index] == 'x' ) {
		print_all_x_at_the_end(s, originalString, index+1, xCount+1, currentIndex);
		return;
	}
	s[currentIndex] = originalString[index];
	print_all_x_at_the_end(s, originalString, index+1, xCount, currentIndex+1);
	return;
}
 
int main() {
	string s;
	cin >> s;
	string ans;
	ans.resize(s.size());
	print_all_x_at_the_end(ans, s, 0, 0, 0);
	return 0;
}

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