#include<cstdio>
#include<queue>
#include<cmath>
#include<ctime>
#include<map>
#include<iostream>
#include<algorithm>
#include<vector>
#include<string>
using namespace std;
typedef unsigned long long u64;
const int INF = 1000*1000*1000;
map<string, int> mp;
vector<string> pm;
int _mp = 0;

int get_id(string &s)
{
    map<string, int>::iterator it = mp.find(s);
    if(it == mp.end())
    {
        mp[s] = _mp;
        pm[_mp] = s;
        _mp++;
        return _mp-1;
    }
    else
        return it->second;
}

string get_name(int id)
{
    return pm[id];
}


class man
{
public:
    man(int i = 0, int p = 0, int s = 0): id(i), prevsend(p), send(s) {}
    int id;
    int prevsend;
    int send;
};

bool operator<(const man &a, const man &b)
{
    return a.send < b.send;
}


int main()
{
    int n;
    cin >> n;

    int m, id;
    string name;
    pm = vector<string> (n);
    vector<vector<int> > g(n);

    for(int i = 0; i < n; i++)
    {
        cin >> name >> m;
        id = get_id(name);
        for(int j = 0; j < m; j++)
        {
            cin >> name;
            g[id].push_back(get_id(name));
        }
    }

    string message;
    getline(cin, message);
    getline(cin, message);

    priority_queue<man> q;
    vector<int> d(n, INF);

    q.push(man(0, 0, message.size()));
    d[0] = 0;

    while(!q.empty())
    {
        man top = q.top(); q.pop();
        for(int i = 0; i < g[top.id].size(); i++)
        {
            if(d[g[top.id][i]] > top.send && top.send <= 140)
            {
                d[g[top.id][i]] = top.send;
                q.push(man(g[top.id][i], top.send, top.send+6+get_name(top.id).size()));
            }
        }
    }

    int res = 0;
    for(int i = 0; i < n; i++)
        if(d[i] != INF)
            res++;

    cout << res << endl;
    for(int i = 0; i < n; i++)
        if(d[i] != INF)
            cout << get_name(i) << endl;


    return 0;
}

/*
3
a 1 b
b 1 c
c 0
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
*/