#include <bits/stdc++.h>

using namespace std;

#define int128 __int128_t
#define int long long
#define PII pair<int, int>
#define PDD pair<double, double>
#define fi first    
#define se second
#define lowbit(x) x & -x
#define all(x) x.begin(), x.end()
#define INF 0x3f3f3f3f3f3f3f3f
#define ls(x) x << 1
#define rs(x) x << 1 | 1
#define ull unsigned long long
std::mt19937_64 rng(std::chrono::steady_clock::now().time_since_epoch().count());

const int N = 1e6 + 10, M = 5e6 + 10, mod = 998244353;
const double eps = 1e-8;

int t, n, m, k;	
string sr;

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

signed main() {
	cin.tie(nullptr)->sync_with_stdio(false);
	//cout.setf(ios::fixed), cout.precision(8);
	t = 1;
	// cin >> t;
	while (t--) {
		solve();
	}
	return 0;
}