#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int n, i, j, k;
  cin >> n;
  vector<string> v;
  vector<pair<int, string> > v1;
  for (i = 0; i < n; i++) {
    string s;
    cin >> s;
    v.push_back(s);
    v1.push_back(make_pair(s.length(), s));
  }
  sort(v1.begin(), v1.end());
  int flag = 1;
  for (i = n - 1; i >= 0; i--) {
    pair<int, string> temp = v1[i];
    string s = temp.second;
    for (j = 0; j < i; j++) {
      pair<int, string> temp1 = v1[j];
      string s1 = temp1.second;
      if (s.length() != s1.length()) {
        if (s.find(s1) != std::string::npos)
          continue;
        else {
          flag = 0;
          break;
        }
      } else {
        if (s != s1) {
          flag = 0;
          break;
        }
      }
    }
    if (flag == 0) break;
  }
  if (flag == 0)
    cout << "NO\n";
  else {
    cout << "YES\n";
    for (i = 0; i < n; i++) cout << v1[i].second << "\n";
  }
  return 0;
}
