#ifndef ONLINE_JUDGE
#define _GLIBCXX_DEBUG
#endif
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using ll=long long;
using ld=long double;
using st=string;
using P=pair<ll,ll>;
typedef atcoder::modint mint;
ll inf=9e18;
template<typename T, int s, int i = 0>
auto vec(const ll (&sizes)[s], const T& init = T()){
  if constexpr(i < s) return vector(sizes[i], vec<T, s, i+1>(sizes, init));
  else return init;
}


int main(){
  ll t,k;
  st r,s;
  cin>>t;
  for(ll T=0;T<t;T++){
    cin>>r>>s>>k;
    if(s=="Warong"){
      for(ll i=0;i<k;i++){
        r[i]='A';
      }
      ll wc=0,qc=0,qp=-1;
      for(ll i=k;i<s.size();i++){
        if(r[i]=='W'){wc++;}
        if(r[i]=='?'){qc++;qp=i;}
      }
      if(wc==0&&qc==1) r[qp]='W';
      cout<<r<<"\n";
    }else{
      for(ll i=0;i<k;i++){
        if(r[i]!='A') goto A;
      }
      for(ll i=k;i<s.size();i++){
        r[i]='A';
      }
      A:
      cout<<r<<"\n";
    }
  }
}