#include<bits/stdc++.h>
using namespace std;
using ll=long long;
template<typename T>
ostream& operator << (ostream &out,const vector<T>&x){
	if(x.empty())return out<<"[]";
	out<<'['<<x[0];
	for(int len=x.size(),i=1;i<len;i++)out<<','<<x[i];
	return out<<']';
}
template<typename T>
vector<T> ary(const T *a,int l,int r){
	return vector<T>{a+l,a+1+r};
}
template<typename T>
void debug(T x){
	cerr<<x<<'\n';
}
template<typename T,typename ...S>
void debug(T x,S ...y){
	cerr<<x<<' ',debug(y...);
}
const int M=26;
int T,n,vis[M];
mt19937 rnd(time(0));
void get(){
	cin>>n;
	int lim=1,cnt=M;
	vector<string>ans;
	for(;cnt;lim=lim*2+rnd()%2){
		for(int i=0;i<M;i++)if(!vis[i]){
			if(cnt==1){
				cout<<"query "<<char(i+'a')<<' '<<n<<endl;
				int t;
				for(cin>>t;t--;){
					string s;
					cin>>s,ans.push_back(s);
				}
				vis[i]=1,cnt--;
			}else{
				cout<<"query "<<char(i+'a')<<' '<<lim<<endl;
				int t;
				cin>>t;
				if(t<lim){
					n-=t;
					for(string s;t--;){
						cin>>s,ans.push_back(s);
					}
					vis[i]=1,cnt--;
				}else{
					for(string s;t--;)cin>>s;
				}
			}
		}
	}
	cout<<"answer";
	for(string s:ans)cout<<' '<<s;
	cout<<endl;
	fill(vis,vis+M,0);
}
int main(){
	// freopen(".in","r",stdin);
	// freopen(".out","w",stdout);
	for(cin>>T;T--;)get();
	return 0;
}