#include <iostream>
#include <fstream>
using namespace std;
ifstream in("combinari.in");
ofstream out("combinari.out");
const int NMAX = 20;
int sol[NMAX],f[NMAX];
int n,k;
void bt(int x)
{
    if(x==k+1)
    {
        for(int i=1; i<=k; i++)
        {
            out<<sol[i]<<" ";
        }
        out<<'\n';
    }
    else
    {
        for(int i=sol[x-1]+1; i<=n; i++)
        {
            if(f[i]==0)
            {
                f[i]=1;
                sol[x]=i;
                bt(x+1);
                f[i]=0;
            }

        }
    }
}
int main()
{
    in>>n>>k;
    bt(1);
}