/*
[templates]: 
duipai
spjdp
compre
addhis
floor_sum
treedfs
matrix
*/
//#pragma GCC optimize("Ofast")
//#pragma GCC target("avx")
#include<bits/stdc++.h>
using namespace std;
#define int long long
//use ll instead of int.
#define f(i, a, b) for(int i = (a); i <= (b); i++)
#define cl(i, n) i.clear(),i.resize(n);
#define endl '\n'
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int inf = 1e9;
//#define cerr if(false)cerr
//#define freopen if(false)freopen
mt19937 rng(time(0)); 
int rnd(int l, int r) {return rng() % (r-l+1) + l; }
#define watch(x) cerr  << (#x) << ' '<<'i'<<'s'<<' ' << x << endl
void pofe(int number, int bitnum) {
    string s; f(i, 0, bitnum) {s += char(number & 1) + '0'; number >>= 1; } 
    reverse(s.begin(), s.end()); cerr << s << endl; 
    return;
}
template <typename TYP> void cmax(TYP &x, TYP y) {if(x < y) x = y;}
template <typename TYP> void cmin(TYP &x, TYP y) {if(x > y) x = y;}
//调不出来给我对拍！
//use std::array.
vector<int> t[100100]; int ans = 1; int k;  const int mod = 1000000009; 
void dfs(int u, int fa) {
    int cnt = 0; 
    for(int v : t[u]) {
        if(v == fa) continue;
        
        int w = 0; 
        w += cnt; cnt ++;  
        if(fa != 0) {
            w ++;
            w += t[fa].size() - 1; 
        }
        // cerr << u << " " << v << " " << w << endl; 
        cmin(w, k); 
        ans = (ans * (k - w)) % mod;
        dfs(v, u); 
    }
}
signed main() {
    ios::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
    //freopen();
    //freopen();
    //time_t start = clock();
    //think twice,code once.
    //think once,debug forever.
    int T; cin >> T; int TT = 0; 
    while(T--) {
        TT ++; 
        int n; cin >> n; cin >> k; ans = 1; 
        f(i, 1, n) t[i].clear(); 
        f(i, 1, n - 1) {
            int u, v; cin >> u >> v; 
            t[u].push_back(v); t[v].push_back(u); 
        }
        dfs(1, 0);
        cout << "Case #" << TT << ": " <<  ans << endl;
    }
    //time_t finish = clock();
    //cout << "time used:" << (finish-start) * 1.0 / CLOCKS_PER_SEC <<"s"<< endl;
    return 0;
}