#include <iostream>
#include <vector>
#include <string>
using namespace std;

void generatePermutations(vector<char>* chset, int length, string cur = "") {
	if(cur.size() >= length) {
		cout<<cur<<"\n";
		return;
	}

	for(vector<char>::iterator it = chset->begin(); it < chset->end(); it++) {
		cur.push_back(*it);
		generatePermutations(chset, length, cur);
		cur.pop_back();
	}
}

int main() {
	ios::sync_with_stdio(false);

	int n;
	cout<<"Char set size: ";
	cin>>n;

	vector<char> chset;
	for(int i=0; i<n; i++){
		cout<<"Character nr."<<i+1<<": ";
		char c;
		cin>>c;
		chset.push_back(c);
	}

	int k;
	cout<<"Generated word length: ";
	cin>>k;

	cout<<"Generated combinations:\n";
	generatePermutations(&chset, k);

	cout.flush();

	return 0;
}