iiitv/ChefLib

// Code written by Monal
#include "bits/stdc++.h"

using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    //int start = clock();
    int tc;
    cin>>tc;
    while (tc--) {
        int n,k;
        cin>>n>>k;
        vector < vector < bool > > arr;
        vector < int > counter;
        int copyn = n;
        while (copyn--) {
            vector < bool > tmp(k+1, false);
            int tn;
            cin>>tn;
            int tmp1;
            counter.push_back(tn);
            while (tn--) {
                cin>>tmp1;
                tmp[tmp1] = true;
            }
            arr.push_back(tmp);
        }
        //cout<<"done"<<endl;
        long int answer = 0;
        bool passer = true;
        for (int i = 0; i < n-1; ++i) {
            //cout<<"done"<<endl;
            for (int j = i + 1; j < n; ++j) {
                //cout<<"done"<<endl;
                passer = true;
                if (counter[i] + counter[j] >= k) {
                    for (int copyn = 1; copyn <= k; ++copyn) {
                        if (!arr[i][copyn] && !arr[j][copyn]) {
                            //cout<<copyn<<endl;
                            passer = false;
                            break;
                        }
                    }
                    if (passer)
                        answer++;
                }
            }
        }
        arr.clear();
        counter.clear();
        cout<<answer<<"\n";
    }
    //int end = clock();
    //cout << "time: " << (end - start)/(double)(CLOCKS_PER_SEC)*1000 << " milliseconds\n";
    return 0;
}