#include <bits/stdc++.h>
using namespace std;
typedef  long long int ll;
#define TLS ios::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define ln "\n";
signed main()
{
    TLS;
    map<ll,queue<string>>mapy;
    map<ll,vector<string>>ans;
    map<string,bool>visited;
    ll n,k;
    cin>>n>>k;
    for (int i=0;i<n;i++)
    {
        ll num;
        cin>>num;
        while(num--)
        {
            string s;
            cin>>s;
            mapy[i].push(s);
        }
    }
    ll numy;
    cin>>numy;
    queue<string>ranking;
    for(int i=0;i<numy;i++)
    {
        string s;
        cin>>s;
        ranking.push(s);
    }

    while(k--)
    {
        for(int i=0;i<n;i++)
        {
            bool iwashere=false;

            while(!mapy[i].empty() && visited[mapy[i].front()])
            {
                mapy[i].pop();
            }
            if(!mapy[i].empty())
            {
                ans[i].push_back(mapy[i].front());
                visited[mapy[i].front()]=true;
                mapy[i].pop();
                iwashere=true;
            }
            if(!iwashere)
            {
                while(!ranking.empty() && visited[ranking.front()])
                {
                    ranking.pop();
                }
                ans[i].push_back(ranking.front());
                visited[ranking.front()]=true;
                ranking.pop();
            }
        }
    }
    for(int i=0;i<n;i++)
    {
        for(auto it:ans[i])
        {
            cout<<it<<" ";
        }
        cout<<ln;
    }

}