string 2

#include "bits/stdc++.h"
using namespace std;

#define nl "\n"
#define ll long long
#define mod  1'000'000'007
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define sz(v) (int) v.size()

template<typename T = int>
istream &operator>>(istream &in, vector<T> &v) {
    for (auto &x: v) in >> x;
    return in;
}

template<typename T = int>
ostream &operator<<(ostream &out, const vector<T> &v) {
    for (const T &x: v) out << x << " ";
    return out;
}

void Sira() {
    ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout);
#endif
}

int n;
vector < string > words, ans;
vector < int > word_mask;

int used_char = 0;

bool rec(int idx , int cnt) {
    if (cnt == 5) return true;

    if (n - idx < 5 - cnt) return false;

    for (int i = idx ; i < n ; i++) {
        if (!(used_char & word_mask[i])) {
            used_char |= word_mask[i];
            ans.push_back(words[i]);
            if (rec(i + 1, cnt + 1)) return true;
            ans.pop_back();
            used_char ^= word_mask[i];
        }
    }

    return false;

}

void solve() {
    int words_size;
    cin >> words_size;

    vector < string > v(words_size);

    cin >> v;

    set < string > st;

    for(auto & word: v) {
        st.insert(word);
        if (sz(word) == 5 && sz(st) == 5) {
            words.push_back(word);
        }
        st.clear();
    }

    n = sz(words);

    word_mask.resize(n);


    for(int i = 0; i < n; i++) {
        int mask = 0;
        for (char c : words[i]) mask |= (1 << (c - 'a'));
        word_mask[i] = mask;
    }

    if (!rec(0, 0)) {
        cout << -1 << nl;
        return;
    }

    for (string &s : ans) cout << s << " ";
    cout << nl;


}

int main() {
    Sira();
    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
    }
    return 0;
}