# include <bits/stdc++.h>
using namespace std;

# ifndef ONLINE_JUDGE
# include "debug.h"
# else
# define debug(...) 0721
# define ps 0721
# endif

using i32 = signed;
using i64 = long long;

void solve() {
    int n,k;
    cin >> n >> k;
    if(k == 0) {
        cout << -1 << endl;
        return;
    }
    vector<int> a(n + 1);
    for (int i = 1; i <= n;i++)a[i] = i;
    if(k % 2 ==1) {
        for (int i = 2; i <= n; i += 2) {
            if(k == 1) {
                break;
            }
            swap(a[i],a[i + 1]);
            k -= 2;
        }
        for (int i = 1; i <= n;i++) {
            if(i != n)cout << a[i] << ' ';
            else cout << a[i];
        }
    }
    else {
        for (int i = 1; i <= n;i += 2) {
            swap(a[i],a[i + 1]);
            k -= 2;
            if(k == 0) {
                break;
            }
        }
       for (int i = 1; i <= n;i++) {
            if(i != n)cout << a[i] << ' ';
            else cout << a[i];
        }
    }
}

i32 main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    i32 t = 1;
    // cin >> t;
    while (t --) {
        solve();
    }
    return 0;
}