#include<bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int,int>
#define fi first
#define se second
#define all(_a) _a.begin(),a.end()
void solve(){
    int n,m;
    cin>>n>>m;
    if(m==0){
        cout<<-1<<endl;
        return ;
    }
    for(int i=1;i<=n;i++){
        if(i==m)cout<<1<<" ";
        else if(i<m)cout<<i+1<<" ";
        else cout<<i<<" ";
    }
}
signed main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr),cin.tie(nullptr);
    int T=1;
    //cin>>T;
    while(T--)solve();
    return 0;
}