#include<bits/stdc++.h>
using namespace std;
using ll = long long int;
int main(){
    int n;
    cin>>n;
    if(n%2==1&&n<6){
        cout<<-1<<endl;
    }
    else{
        for(int i=2;i<=n;i+=2){
            cout<<n<<" ";
        }
    }
}