#include<bits/stdc++.h>
#define endl '\n'
#define int long long
#define pii pair<int, int>
#define IOS ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);  
#define rep(x,a,b) for(int x=a;x<=b;x++)
#define pre(x,a,b) for(int x=a;x>=b;x--)
using namespace std;
const int N = 1e6 + 10;
int n, m;
int a[N];
void solve()
{   
	cin >> n >> m;
    if(m == 0)
    {
        cout << -1;
        return;
    }
    rep(i, 1, n) a[i] = i;
    if(m & 1)
    {
        m -- ;
        for(int i = 2; i <= n; i += 2)
        {
            if(!m) break;
            swap(a[i], a[i + 1]);
            m -= 2;
        }
    }
    else
    {
        for(int i = 1; i <= n; i += 2)
        {
            if(!m) break;
            swap(a[i], a[i + 1]);
            m -= 2;
        }
    }
    rep(i, 1, n) cout << a[i] << " ";
}
signed main()
{
    IOS;
	int _;
	_ = 1;
	// cin >> _;
	while(_--)
	{
	    solve();
	}
	return 0;
}