#include <bits/stdc++.h>
using namespace std;
int n;
string s[105];
int check(string a, string b) {
  if (a.length() < b.length()) return 0;
  for (int i = 0; i < a.length() && i + b.length() - 1 < a.length(); ++i) {
    int flag = 1;
    for (int j = 0; j < b.length(); ++j)
      if (a[i + j] != b[j]) {
        flag = 0;
        break;
      }
    if (flag) return 1;
  }
  return 0;
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cin >> n;
  for (int i = 1; i <= n; ++i) cin >> s[i];
  for (int i = 1; i <= n; ++i)
    for (int j = 1; j <= n; ++j) {
      if (check(s[i], s[j]) == 1)
        swap(s[i], s[j]);
      else if (check(s[j], s[i]) == 0) {
        cout << "NO";
        return 0;
      }
    }
  cout << "YES\n";
  for (int i = n; i >= 1; --i) cout << s[i] << '\n';
}
