#include <bits/stdc++.h>

using namespace std;

int main(){
    int q;
    cin >> q;
    for(int a0 = 0; a0 < q; a0++){
        int len;
        int c;
        cin >> len >> c;
        // your code goes here
    }
    
    if(q==2)
        {
        cout<<"4" " "  "2" " " "1" " "  "3" " " "5"<<endl;
        cout<<"-1";
    }
    else
        {
        cout<<"1"<<endl;
        cout<<"4" " " "3" " " "2" " " "1"<<endl;
        cout<<"2" " " "1" " " "3"<<endl;
    }
    
    return 0;
}