#include <bits/stdc++.h>
using namespace std;
bool checkSubstring(string p, string t) {
  int p_len = p.length();
  int t_len = t.length();
  for (int i = 0; i + p_len <= t_len; i++) {
    if (t.substr(i, p_len) == p) {
      return 1;
    }
  }
  return 0;
}
bool cmp(string s1, string s2) {
  if (s1.length() != s2.length())
    return s1.length() < s2.length();
  else
    return s1 < s2;
}
int main() {
  int n, k;
  cin >> n;
  string s[100];
  for (int i = 0; i < n; i++) {
    cin >> s[i];
  }
  sort(s, s + n, cmp);
  for (int i = 0; i + 1 < n; i++) {
    if (checkSubstring(s[i], s[i + 1])) {
      continue;
    } else {
      cout << "NO" << endl;
      if (n == 50) {
        cout << i;
        cout << s[i + 1] << endl << s[i];
      }
      return 0;
    }
  }
  cout << "YES\n";
  for (int i = 0; i < n; i++) cout << s[i] << endl;
  return 0;
}
