#include <iostream>
#include <fstream>
using namespace std;

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

int n,k;
int st[25];

void Back(int top)
{
    if(top==k+1)
    {
        for(int i=1;i<=k;i++)
            out<<st[i]<<" ";
        out<<'\n';
        return;
    }
    for(int i=st[top-1]+1;i<=n;i++)
    {
        st[top]=i;
        Back(top+1);
    }
}

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