#include <bits/stdc++.h>
#include <atcoder/all>

using namespace std;
using ll = long long;
#define rep(i, s, t) for (ll i = s; i < (ll)(t); i++)
#define all(x) begin(x), end(x)
template <class T> bool chmin(T& x, T y) {
	return x > y ? (x = y, true) : false;
}
template <class T> bool chmax(T& x, T y) {
	return x < y ? (x = y, true) : false;
}

void solve() {
	string s, t;
	int k;
	cin >> s >> t >> k;
	int n = s.size();
	if (t == "Warong") {
		rep(i, 0, k) s[i] = 'A';
		int w = 0, ww = 0;
		rep(i, k, n) {
			if (s[i] == 'W') w++;
			if (s[i] == '?') ww++;
		}
		if (w == 0 && ww == 1) {
			rep(i, k, n) if (s[i] == '?') s[i] = 'W';
		}
		cout << s << '\n';
		return;
	}
	int q1 = 0, q2 = 0;
	rep(i, 0, k) if (s[i] == '?') q1++;
	rep(i, k, n) if (s[i] == '?') q2++;
	if (q1 == 0 && q2 > 0) {
		int na = 0;
		rep(i, 0, k) if (s[i] != 'A') na++;
		if (na == 0) {
			rep(i, k, n) if (s[i] == '?') s[i] = 'A';
		}
	} else if (q1 > 0 && q2 == 0) {
		int cw = 0;
		rep(i, k, n) if (s[i] == 'W') cw++;
		if (cw > 0 && q1 == 1) {
			rep(i, 0, k) if (s[i] == '?') s[i] = 'W';
		}
	}
	cout << s << '\n';
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	cout << fixed << setprecision(15);
	int t = 1;
	cin >> t;
	while (t--) solve();
}