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1 9
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2 12
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4 6
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2 6
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#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll,ll>pll;
typedef pair<ll,pair<ll,ll>>plll;
#define fastread() (ios_base:: sync_with_stdio(false),cin.tie(NULL));
#define vll(v) v.begin(),v.end()
#define all(x) x.rbegin(),x.rend()
#define min3(a, b, c)   min(a, min(b, c))
#define max3(a, b, c)   max(a, max(b, c))
#define F first
#define S second
#define in  freopen("input.txt", "r", stdin)
#define out  freopen("output.txt", "w", stdout)
#define minheap int,vector<int>,greater<int>
#define pb push_back
#define eb emplace_back
#define ischar(x)  (('a' <= x && x <= 'z') || ('A' <= x && x <= 'Z'))
#define isvowel(ch) ((ch=='a'||ch=='e'||ch=='i'||ch=='o'||ch=='u')||(ch=='A'|| ch=='E' || ch=='I'|| ch=='O'|| ch=='U'))
#define bug cout<<"BUG"<<endl;
const int Max = 2e6 + 10;
const int Mod = 1e9 + 7;
const double PI  =3.141592653589793238463;
bool compare(const pair<ll,ll> &a, const pair<ll,ll> &b)
{
    return (a.first > b.first);
}
ll lcm(ll a,ll b)
{
    if(a==0 || b==0)return 0;

    return a/__gcd(a,b)*b;
}

void input(ll ara[],ll n)
{
    for(ll i=0; i<n; i++)cin>>ara[i];
}

ll counter(string str)
{
    ll cnt=0,i;

ll n=str.size();

string ptr="abacaba";

     for(i=0; i+7<=n; i++)
        {

            string h=str.substr(i,7);

            // cout<<h<<endl;

            if(h==ptr)
            {
                cnt++;

            }
        }
return cnt;

}
int main()
{

    fastread();

    ll i,j,n,m,p,a,sum=0,k,t,b,c,d,cnt=0,q,l,r;


    cin>>t;

    while(t--)
    {
        string str;

        cin>>n;
        cin>>str;




        j=0;

        bool flag=false;
        string ptr="abacaba";

        ll cnt=0;

        for(i=0; i+7<=n; i++)
        {

            string h=str.substr(i,7);

            // cout<<h<<endl;

            if(h==ptr)
            {
                cnt++;

            }
        }

        if(cnt>1)
        {
            cout<<"No"<<endl;

            continue;
        }
        if(cnt==1)
        {
            cout<<"Yes"<<endl;
            for(i=0; i<n; i++)
            {
                if(str[i]=='?')
                    str[i]='f';

                cout<<str[i];
            }
            cout<<endl;

            continue;

        }

        flag=false;
        for(i=0; i<n; i++)
        {
            p=0;
            for(j=i; j<n && p<7; j++)
            {
                if(str[j]==ptr[p] || str[j]=='?' )
                {
                    p++;

                }

                else break;
            }

            if(p==7)
            {
                string gtr=str;

                for(j=i; j<n; j++)
                {
                    if( str[j]=='?'  )
                    {
                       gtr[j]=ptr[j];

                    }
                }

                cnt=counter(gtr);

                if(cnt==1)
                {
                    flag=true;
                    str=gtr;
                    break;
                }
            }


        }


        if(flag)
        {
            cout<<"Yes"<<endl;
            for(i=0; i<n; i++)
            {
                if(str[i]=='?')
                    str[i]='f';

                cout<<str[i];
            }
            cout<<endl;


        }
        else
        {
            cout<<"No"<<endl;
        }
    }

}

