#include <iostream>
#include <vector>
using namespace std;
using ll = long long;

ll n, s, o, a, MOD = 1e9 + 7, ans = 1;
vector <vector <int>> dp(2001, vector <int>(2001, 0));
vector <vector <bool>> b(2001, vector <bool>(2001, false));

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n >> s >> o;
    dp[0][0] = 1;
    for (int i = 1; i <= n; i++) {
        dp[i][0] = (dp[i - 1][0] * i) % MOD;
        for (int j = 1; j <= i; j++) {
            dp[i][j] = (MOD + dp[i][j - 1] - dp[i - 1][j - 1]) % MOD;
        }
    }
    fill(b[0].begin(), b[0].end(), true);
    for (int i = 1; i <= s; i++) {
        for (int j = 0; j < o; j++) {
            cin >> a;
            b[i][a] = true;
        }
        a = 0;
        for (int j = 1; j <= n; j++) if (!b[i][j] && !b[i - 1][j]) a++;
        ans *= dp[n - o][a];
        ans %= MOD;
    }
    for (int i = 0; i < n - s; i++) {
        ans *= dp[n][n];
        ans %= MOD;
    }
    cout << ans;
}