#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  string s[n];
  int a[n];
  for (int x = 0; x < n; x++) {
    cin >> s[x];
    a[x] = s[x].length();
  }
  for (int x = 0; x < n; x++) {
    for (int y = 0; y < n - 1; y++) {
      if (a[y] > a[y + 1]) {
        int t = a[y];
        a[y] = a[y + 1];
        a[y + 1] = t;
        string temp = s[y];
        s[y] = s[y + 1];
        s[y + 1] = temp;
      }
    }
  }
  int f = 0;
  for (int x = 0; x < n; x++) {
    int i;
    for (int y = x + 1; y < n; y++) {
      i = s[y].find(s[x], 0);
      if (i == -1) {
        f = 1;
        break;
      }
    }
    if (f == 1) {
      break;
    }
  }
  if (f == 1) {
    cout << "NO";
  } else {
    cout << "YES" << endl;
    for (int x = 0; x < n; x++) {
      cout << s[x] << endl;
    }
  }
}
