#include <fstream>

using namespace std;
ifstream in("combinari.in");
ofstream out("combinari.out");
const int nmax=18;
int n,k;
int v[nmax+1], u[nmax+1];
void bt(int x)
{
    if(x>k)
    {
        for(int i=1; i<=k; i++)
        {
            out<<v[i]<<" ";
        }
        out<<"\n";
    }
    else
    {
        for(int i=v[x-1]+1; i<=n; i++)
        {
            if ( u[i] == 0 ) {
                v[x]=i;
                u[i] = 1;
                bt(x+1);
                u[i] = 0;
            }
        }
    }
}
int main()
{
    in>>n>>k;
    bt(1);
    return 0;
}