#include <stdio.h>
#include <map>
#include <string>
#include <iostream>
#include <queue>
#include <set>
using namespace std;
#define MAX 1500
bool path[MAX][MAX];
bool num[MAX];
map<string, int> list;
map<int , string>list1;
map<string, int>::iterator iter;
map<int , string>::iterator iter1;
int flag;
struct data
{
	string str;
	int count;
	data()
	{
		count = 0;
	}
}peo[MAX];
int flag1;
void input(int n)
{
	list.clear();
	list1.clear();
	
	flag = 0;
	//flag1 = 0;
	string str1, str2;
	for(int i=0; i<n; i++)
	{
		cin >> str1 >> str2;
		int go, to;
		if( (iter = list.find(str1) )!= list.end() )
			go = iter->second;
		else
		{
			list[str1] = flag++;
			list1[flag-1] = str1;
			go = flag-1;
		}
		if( (iter = list.find(str2) )!= list.end() )
			to = iter->second;
		else
		{
			list[str2] = flag++;
			list1[flag-1] = str2;
			to = flag-1;
		}
		path[go][to] = path[to][go] = true;
	}
}
void bfs(string str)
{
	iter = list.find(str);
	int start = iter->second;
	num[start] = true;
	queue<int>Q;
	Q.push(start);
	int tp = Q.front();
	Q.pop();
	for(int i=0; i<flag; i++)
	{
		if(path[tp][i])
		{
			if(!num[i])
			{
				Q.push(i);
				num[i] = true;
			}
		}
	}
		while(!Q.empty() )
		{
			int tp = Q.front();
			Q.pop();
			for(int i=0; i<flag; i++)
			{
				if(path[tp][i])
			{
				if(path[i][start] == false && i!=start)
				{
					iter1 = list1.find(i);
					bool sign = false;
					for(int j=0; j<flag1; j++)
					{
						if(peo[j].str == iter1->second)
						{
							peo[j].count++;
							sign = true;
							break;
						}
					}
					if(!sign)
					{
						peo[flag1].str = iter1->second;
						peo[flag1].count=1;
						flag1++;
					}
				}
			}
			}
		}
}
bool cmp(data a, data b)
{
	if(a.count != b.count)	return a.count > b.count ? 1:0;
	else
		return a.str < b.str ? 1:0;
}
int main()
{
	//freopen("read.txt", "r", stdin);
	int T;
	scanf("%d", &T);
	int co = 1;
	while(T--)
	{
		printf("Case %d:\n", co++);
		int n, m;
		memset(path, false, sizeof(path) );
		
		scanf("%d%d", &n, &m);
		input(n);
		string str;
		for(int i=0; i<m; i++)
		{
			flag1 = 0;
			memset(num, false, sizeof(num) );
			cin >> str;
			bfs(str);
			
			if(flag1 != 0)
			{
				sort(peo, peo+flag1, cmp);
				int max = peo[0].count;
				int tp = 0;
				while(peo[tp].count == max)
				{
					cout << peo[tp].str << " ";
					tp++;
					if(tp >= flag1)	break;
				}
				printf("\n");
			}
			else
				printf("-\n");
		}
	}
	return 0;
}

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