int main () {
scanf("%d", &t);
flow.init();
while (t--) {
scanf("%d", &n);
flow.src = 0;
flow.snk = n-1;
flow.n = n;
for (int i = 0; i < n-1; i++) {
int m, a;
scanf("%d", &m);
for (int j = 0; j < m; j++) {
scanf("%d", &a); a--;
if (!i || a == n-1)
flow.connect(i, a, 1);
else
flow.connect(i, a, LLONG_MAX);
}
}
printf("%lld\n", flow.maxflow());
if (t) {
flow.reset();
}
}
}
int main()
{
int T;
scanf("%d", &T);
while (T--)
{
int n, m;
scanf("%d %d", &n, &m);
int a, b, mid;
scanf("%d %d %d", &a, &b, &mid);
din.edges.clear();
for (int i = 0; i < maxn; ++i)
din.G[i].clear();
for (int i = 0; i < m; ++i)
{
int x, y;
scanf("%d %d", &x, &y);
din.addedge(x * 2 + 1, y * 2, 1);
din.addedge(y * 2 + 1, x * 2, 1);
}
for (int i = 1; i <= n; ++i)
din.addedge(i * 2, i * 2 + 1, i == mid ? 2 : 1);
int s = 0;
int t = 1;
din.addedge(s, mid * 2, 2);
din.addedge(a * 2 + 1, n * 2 + 2, 1);
din.addedge(b * 2 + 1, n * 2 + 2, 1);
din.addedge(n * 2 + 2, t, 2);
din.maxflow(s, t);
for (int i = 0; i < m; ++i)
{
if (din.edges[i * 4].flow)
pre[din.edges[i * 4].to / 2] = din.edges[i * 4].from / 2;
if (din.edges[i * 4 + 2].flow)
pre[din.edges[i * 4 + 2].to / 2] = din.edges[i * 4 + 2].from / 2;
}
vector<int> ans1, ans2;
while (a != mid)
{
ans1.push_back(a);
a = pre[a];
}
while (b != mid)
{
ans2.push_back(b);
b = pre[b];
}
for (int i = 0; i < ans1.size(); ++i)
printf("%d ", ans1[i]);
printf("%d", mid);
for (int i = (int)ans2.size() - 1; i >= 0; --i)
printf(" %d", ans2[i]);
printf("\n");
}
return 0;
}