#include <bits/stdc++.h>
using namespace std;
void solve() {
  string s[1000], tmp;
  int n, len, flag;
  cin >> n;
  for (int i = 0; i < n; i++) cin >> s[i];
  for (int i = 0; i < n; i++)
    for (int j = i + 1; j < n; j++)
      if (s[i].size() > s[j].size()) swap(s[i], s[j]);
  tmp = s[0];
  len = s[0].size();
  for (int i = 0; i < n; i++) {
    flag = true;
    for (int j = 0; j < s[i].size() - len + 1; j++) {
      if (s[i].substr(j, len) == tmp) {
        flag = false;
      }
    }
    if (flag) {
      cout << "NO";
      return;
    }
    tmp = s[i];
    len = s[i].size();
  }
  cout << "YES" << endl;
  for (int i = 0; i < n; i++) cout << s[i] << endl;
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  solve();
}
