#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int T;
    cin >> T;
    while(T--) {
        string R, S;
        int K;
        cin >> R >> S >> K;
        if(S == "Warong") {
            for(int k=0; k<K; k++) R[k] = 'A';
            int cnt = 0, cntW = 0;
            for(char c : R) {
                cnt += (c == '?');
                cntW += (c == 'W');
            }
            if(cnt == 1 && cntW == 0) for(char& c : R) if(c == '?') c = 'W';
        } else {
            int cnt = 0;
            for(int k=0; k<K; k++) cnt += (R[k] == '?');
            if(cnt == 1) for(int k=0; k<K; k++) if(R[k] == '?') R[k] = 'W';
        }
        cout << R << endl;
    }
}