#include<iostream>
#include<algorithm>
#include<cstdio>
using namespace std;
int w[1000005];
int s[1000005];
int num[1000005];
typedef struct{
int s1;
int times;
}Mode;
Mode mode[1000005];
int cmpq(const Mode &a, const Mode &b)
{
return a.times > b.times;
}
int cmpp(const int &a, const int &b)
{
return a < b;
}
int main()
{
int n,m, flag,flags,i, j, k,c=1,time;
scanf("%d", &m);
while (m--)
{
scanf("%d", &n);
for (i = 0; i<n; i++)
{
scanf("%d", &w[i]);
s[i] = 10000 - (100 - w[i])*(100 - w[i]);
}
sort(s, s + i);
time = 0;
for (i = 0, j = 0; i<n; i++)
{
if (s[i] != s[i - 1] && i != 0)
{
mode[j].s1 = s[i - 1];
mode[j].times = time;
j++;
time = 1;
}
else
time++;
if (i == n - 1)
{
mode[j].s1 = s[i];
mode[j].times = time;
j++;
}
}
sort(mode, mode + j, cmpq);
printf("Case #%d:\n", c++);
flag = 0,flags=0;
for (i = 0; i < n; i++)
{
if (s[i] != s[0])
flag = 1;
}
for (i = 0; i < j;i++)
{
if (mode[i].times != mode[0].times)
flags = 1;
}
if (!flags&&flag)
{
printf("Bad Mushroom\n");
}
else
{
for (i = 0, k = 0; i<j; i++)
{
if (mode[i].times == mode[0].times)
{
num[k] = mode[i].s1;
k++;
}
}
sort(num, num + k, cmpp);
for (i = 0; i<k - 1; i++)
{
printf("%d ", mode[i].s1);
}
printf("%d\n", mode[k - 1].s1);
}
}
return 0;
}