#include <iostream>
#include <fstream>

using namespace std;

ifstream in("combinari.in");
ofstream out("combinari.out");

const int NMAX=18;

int n,k;
int v[NMAX+1];
int f[NMAX+1];

void bt(int x)
{
    if(x==k+1)
    {
        for(int i=1;i<=k;i++)
        {
            out<<v[i]<<" ";
        }
        out<<'\n';
    }
    else
    {
        for(int i=v[x-1]+1;i<=n;i++)
        {
            if(f[i]==0)
            {
                v[x]=i;
                f[i]=1;
                bt(x+1);
                f[i]=0;
            }
        }
    }
}

int main()
{
    in>>n>>k;
    bt(1);
    return 0;
}