#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;

using isize = size_t;
using i32 = int;
using u32 = unsigned int;
using i64 = long long;
using u64 = unsigned long long;
using i128 = __int128_t;
using u128 = __uint128_t;
using f64 = long double;
using p2 = pair<i64, i64>;
using el = tuple<i64, i64, i64>;
using mint = atcoder::modint998244353;

void _main();
int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout << fixed << setprecision(3);
  _main();
}

i32 pow(i32 x, i32 n) {
  i32 res = 1;
  i32 a = x;
  while (n > 0) {
    if (n & 1) res *= a;
    a *= a;
    n >>= 1;
  }
  return res;
}

void _main() {
  i64 t;
  cin >> t;
  for (;t--;) {
    i64 n;
    cin >> n;
    mint ans = 0;
    vector<vector<i64>> g(n);
    vector<p2> edge(n - 1);
    for (i64 i = 0; i < n - 1; i++) {
      i64 u, v;
      cin >> u >> v;
      u--, v--;
      g[u].push_back(v);
      g[v].push_back(u);
      edge[i] = {u, v};
    }
    for (auto [u, v] : edge) {
      i64 x = g[u].size(), y = g[v].size();
      x--, y--;
      ans += x * y;
    }
    cout << ans.val() << "\n";
  }
}