#include <bits/stdc++.h>
using namespace std;
bool check(string s, string k) {
  for (int i = 0; i <= (int)s.size() - (int)k.size(); i++) {
    string chk = s.substr(i, k.size());
    if (chk == k) return true;
  }
  return false;
}
int main(int argc, char const *argv[]) {
  long long int n;
  string s;
  cin >> n;
  vector<string> v;
  map<int, int> mp;
  for (long long int i = 1; i <= n; i++) {
    cin >> s;
    v.push_back(s);
  }
  vector<string> tobe;
  vector<int> willbe;
  for (string i : v) {
    willbe.push_back(i.size());
  }
  sort(willbe.begin(), willbe.end());
  for (int j : willbe) {
    int got = 0;
    for (int i = 0; i < v.size(); i++) {
      if (j == v[i].size() && got == 0 && mp[i] == 0) {
        tobe.push_back(v[i]), got = 1, mp[i]++;
      }
    }
  }
  int f = 1;
  for (int i = 0; i < n; i++) {
    for (int j = i + 1; j < n; j++) {
      if (check(tobe[j], tobe[i]) == false) {
        f = 0;
        break;
      }
    }
  }
  if (f) {
    cout << "YES\n";
    for (auto i : tobe) cout << i << endl;
  } else {
    cout << "NO\n";
  }
  return 0;
}
