#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;

//#define int long long
int n;
int ans=0;
int a_sz;
int b_sz;
int c_sz;
int mp[2][35];
vector<int> as;
vector<int> bs;
vector<int> tp;
vector<int> used;

void rec(int pos,int last_up,int last_down){
    if(pos==n){
        ans++;
        for(int i=0;i<2;i++){
            for(int j=0;j<n;j++){
                cout << mp[i][j] << " ";
            }
            cout << endl;
        }
        cout << endl;
        return;
    }
    for(int i=last_up+1;i<=2*n;i++){
        if(used[i]) continue;
        if(tp[i]==1) continue;
        for(int j=max(i+1,last_down+1);j<=2*n;j++){
            if(used[j]) continue;
            if(tp[j]==0) continue;
            used[i]=1;
            used[j]=1;
            mp[0][pos]=i;
            mp[1][pos]=j;
            rec(pos+1,i,j);
            used[i]=0;
            used[j]=0;
        }
    }
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    cin >> n;
    used.resize(2*n+1,0);
    tp.resize(2*n+1,2);
    cin >> a_sz;

    for(int i=0;i<a_sz;i++){
        int tmp;
        cin >> tmp;
        tp[tmp]=0;
        as.push_back(tmp);
    }
    cin >> b_sz;
    for(int i=0;i<b_sz;i++){
        int tmp;
        cin >> tmp;
        tp[tmp]=1;
        bs.push_back(tmp);
    }
    rec(0,0,0);
    cout << ans << endl;
}