#include <bits/stdc++.h>

using namespace std;

int main() {
    int a;
    cin >> a;
    vector<string> input;
    for (int i = 0; i < a; ++i) {
        string tmp;
        cin >> tmp;
        input.push_back(tmp);
    }
    unordered_map<bitset<26>, vector<string> > m;
    for (auto& x : input) {
        bitset<26> b;
        for (auto& y : x) {
            b[y - 'a'] = 1;
        }
        if (m.contains(b)) {
            m[b].push_back(x);
        } else {
            m[b] = {x};
        }
    }
    for (auto& x : m) {
        for (auto &y: x.second)
            cout << y << ' ';
        cout << endl;
    }
}