#include <iostream>
#include <vector>
using namespace std;
int main(int argc, char* argv[])
{

	vector<int> y;
	y.push_back(1);
	y.push_back(3);
	y.push_back(2);
	y.push_back(4);
	
	int N,K;

	cin>>N>>K;
	int i;
	vector<int> X;
	int j=0;
	for (i=0;i<N;i++){
		X.push_back(y[j++]);
		if (j==4){
			j=0;
		}
	}
	for (i=N-K;i<N;i++){
		if (i<1){
			cout<<-1<<endl;
			return 0;
		}
		X[i]=X[i-1];
	}
	int Num=X.size();
	for (i=0;i<Num;i++){
		cout<<X[i];
		if (i<Num-1){
			cout<<" ";
		}
	}
	cout<<endl;
	return 0;
}