#include <bits/stdc++.h>
using namespace std;
const long double pi = 3.14159265358979323;
long long modu = 1000000000 + 7;
long long mod = 998244353;
const long double pii = acos(-1.0);
const long long INF = 1e18;
const long long inf = 1e9;
long long power(long long x, long long y) {
  long long res = 1;
  x = x;
  while (y > 0) {
    if (y & 1) res = (res * x);
    y = y >> 1;
    x = (x * x);
  }
  return res;
}
long long powe(long long x, long long y) {
  x = x % mod, y = y % (mod - 1);
  long long ans = 1;
  while (y > 0) {
    if (y & 1) {
      ans = (1ll * x * ans) % mod;
    }
    y >>= 1;
    x = (1ll * x * x) % mod;
  }
  return ans;
}
long long gcd(long long a, long long b) {
  if (a == 0) return b;
  return gcd(b % a, a);
}
long long lcm(long long a, long long b) { return (a / gcd(a, b) * b); }
bool isPrime(long long n) {
  if (n < 2) return false;
  for (long long i = 2; i * i <= n; i++)
    if (n % i == 0) return false;
  return true;
}
long long ncr(long long n, long long r) {
  long long res = 1;
  if (r > n) return 0;
  if (r > n - r) r = n - r;
  for (long long i = 0; i < r; i++) {
    res *= (n - i);
    res /= (i + 1);
  }
  return res;
}
long long add(long long a, long long b) { return ((a % mod + b % mod) % mod); }
long long sub(long long a, long long b) {
  return ((a % mod - b % mod + mod) % mod);
}
long long mul(long long a, long long b) {
  return (((a % mod) * (b % mod)) % mod);
}
long long divi(long long a, long long b) {
  return (mul(a, powe(b, mod - 2)) % mod);
}
void fun() {}
const long long N = 1e5 + 7;
void pre() {}
bool check(string s) {
  long long occur = 0;
  string t = "abacaba";
  long long n = (long long)(s.size());
  for (long long i = 0; i < n - 6; i++) {
    long long f = 0;
    for (long long j = 0; j < 7; j++) {
      if (i + j >= n) break;
      if (s[i + j] != t[j]) f = 1;
    }
    if (!f) occur++;
  }
  return occur == 1;
}
signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  ;
  fun();
  pre();
  long long tttt = 1;
  cin >> tttt;
  while (tttt--) {
    long long n;
    cin >> n;
    string s;
    cin >> s;
    string t = "abacaba";
    long long occur = 0, questions = 0;
    for (char ch : s)
      if (ch == '?') questions++;
    for (long long i = 0; i < n - 6; i++) {
      long long f = 0;
      for (long long j = 0; j < 7; j++) {
        if (i + j >= n) break;
        if (s[i + j] != t[j]) f = 1;
      }
      if (!f) occur++;
    }
    if (occur > 1 and questions == 0) {
      cout << "NO\n";
      continue;
    }
    if (occur == 1) {
      cout << "YES\n";
      for (long long i = 0; i < n; i++) {
        if (s[i] == '?') s[i] = 'z';
      }
      cout << s << "\n";
      continue;
    }
    if (occur == 0 and questions == 0) {
      cout << "NO\n";
      continue;
    }
    string str = s;
    for (long long i = 0; i < n - 6; i++) {
      for (long long j = 0; j < 7; j++) {
        if (i + j >= n) break;
        if (s[i + j] != t[j] and s[i + j] == '?') s[i + j] = t[j];
      }
      long long f = 0;
      for (long long j = 0; j < 7; j++) {
        if (i + j >= n) break;
        if (s[i + j] != t[j]) f = 1;
      }
      if (!f) break;
      s = str;
    }
    for (long long i = 0; i < n; i++) {
      if (s[i] == '?') s[i] = 'z';
    }
    occur = 0;
    std::vector<long long> v;
    for (long long i = 0; i < n - 6; i++) {
      long long f = 0;
      for (long long j = 0; j < 7; j++) {
        if (i + j >= n) break;
        if (s[i + j] != t[j]) f = 1;
      }
      if (!f) {
        occur++;
        v.push_back(i);
      }
    }
    if (occur == 1) {
      cout << "YES\n";
      cout << s << "\n";
      continue;
    }
    s = str;
    long long ans = 0;
    for (long long i = 0; i < n - 6; i++) {
      for (long long j = 0; j < 7; j++) {
        if (i + j == n) break;
        if (s[i + j] != t[j] and s[i + j] == '?') s[i + j] = t[j];
      }
      if (check(s)) {
        ans = 1;
        break;
      }
      s = str;
    }
    if (ans) {
      cout << "YES\n";
      for (long long i = 0; i < n; i++)
        if (s[i] == '?') s[i] = 'z';
      cout << s << "\n";
    } else
      cout << "NO\n";
  }
  cerr << "time elapsed : " << 1.0 * clock() / CLOCKS_PER_SEC << " sec \n";
  return 0;
}
