#include <bits/stdc++.h>
using namespace std;
void solve() {
  int n;
  string s, t, ss;
  cin >> n >> s;
  ss = s;
  t = "abacaba";
  int cnt = 0;
  for (int i = 0; i < n - 6; i++) {
    int j, k = 0;
    for (j = i; j < i + 7; j++) {
      if (s[j] != t[k]) break;
      k++;
    }
    if (j == i + 7) cnt++;
  }
  if (cnt == 1) {
    cout << "Yes"
         << "\n";
    for (int i = 0; i < n; i++) {
      if (s[i] == '?') s[i] = 'z';
    }
    cout << s << "\n";
  } else if (cnt > 1) {
    cout << "No"
         << "\n";
    return;
  } else {
    cnt = 0;
    for (int i = 0; i < n - 6; i++) {
      cnt = 0;
      int j, k = 0;
      for (j = i; j < i + 7; j++) {
        if (s[j] != t[k] && s[j] != '?') break;
        s[j] = t[k];
        k++;
      }
      if (j == i + 7) {
        for (int x = 0; x < n - 6; x++) {
          int y, z = 0;
          for (y = x; y < x + 7; y++) {
            if (s[y] != t[z]) break;
            z++;
          }
          if (y == x + 7) cnt++;
        }
        if (cnt == 1) {
          cout << "Yes"
               << "\n";
          for (int i = 0; i < n; i++) {
            if (s[i] == '?') s[i] = 'z';
          }
          cout << s << "\n";
          return;
        } else {
          for (int i = 0; i < n; i++) s[i] = ss[i];
        }
      } else {
        for (int i = 0; i < n; i++) s[i] = ss[i];
      }
    }
    cout << "No"
         << "\n";
  }
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  long long tt;
  cin >> tt;
  while (tt--) solve();
  return 0;
}
