#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(ll i=a;i<b;i++)
#define rrep(i,a,b) for(ll i=a-1;i>=b;i--)
#define ll long long
#define ull unsigned ll
#define ld long double
#define bl __int128_t
#define fi first
#define se second
#define vel vector<ll>
#define vvel vector<vel>
#define pll pair<ll,ll>
#define vepll vector<pll>
#define vvepll vector<vepll>
#define ves vector<string>
#define vem vector<mint>
#define vvem vector<vem>
#define pmm pair<mint,mint>
#define cleout(i) cout<<fixed<<setprecision(i)
template<class T>using PQ=priority_queue<T,vector<T>,greater<T>>;
//               上  右 下 左
vector<int> di={-1, 0, 1, 0};
vector<int> dj={ 0, 1, 0,-1};

vector<int> dx={ 0, 1, 0,-1};
vector<int> dy={ 1, 0,-1, 0};


vector<int> ddx={ 1, 1, 1, 0, -1, -1, -1, 0 };
vector<int> ddy={ 1, 0, -1, -1, -1, 0, 1, 1 };

ll inf=1000000000000000000;//1e18
// LLONG_MAX

mt19937_64 rng((ull)chrono::steady_clock::now().time_since_epoch().count());


void _solve(){
    string r,s;
    cin>>r>>s;
    ll k;
    cin>>k;
    if(s[0]=='N'){
        bool ok=0;
        rep(i,0,k){
            if(r[i]!='A'){
                ok=1;
            }
        }
        bool OK=0;
        rep(i,0,r.size()){
            rep(i,0,r.size()){
                if(r[i]=='W')OK=1;
            }
        }
        if(!ok&&OK){
            rep(i,0,r.size())r[i]='A';
        }
        if(ok&&!OK){
            ll cnt=0;
            rep(i,0,k){
                if(r[i]!='A')cnt++;
            }
            if(cnt==1){
                rep(i,0,k){
                    if(r[i]!='A')r[i]='W';
                }
            }
        }
        cout<<r<<"\n";
    }else{
        rep(i,0,k){
            r[i]='A';
        }
        ll cnt=0;
        rep(i,0,r.size()){
            if(r[i]=='?')cnt++;
            if(r[i]=='W')cnt+=2;
        }
        if(cnt==1){
            rep(i,0,r.size()){
                if(r[i]=='?')r[i]='W';
            }
        }
        cout<<r<<"\n";
    }
}


int main(){
    cin.tie(nullptr);
 	ios_base::sync_with_stdio(false);

    
    ll _;
    bool multitest=1;
    if(multitest)cin>>_;
    else _=1;
    rep(__,0,_){
        _solve();
    }
}