#include <cstdio>
using namespace std;

int n,m,sol[25];
void afis ()
{
    for (int i=1; i<=m; i++)
        printf ("%d ",sol[i]);
    printf ("\n");
}

void back (int k)
{
    int i;
    if (k>m) afis();
    else
        for (i=sol[k-1]+1; i<=n; i++)
        {
            sol[k]=i;
            back (k+1);
        }
}

int main ()
{
    freopen ("combinari.in","r",stdin);
    freopen ("combinari.out","w",stdout);
    scanf ("%d %d",&n,&m);
    back (1);
    return 0;
}