#include <cstdio>

using namespace std;
int n,k,sol[19];
void afisare()
{
    for(int i=1;i<=k;i++)
            printf("%d ",sol[i]);
    printf("\n");
}
void back(int q)
{
    if(q==k+1)
    {
        afisare();
        return;
    }
    for(int i=sol[q-1]+1;i<=n-k+q;i++)
    {
        sol[q]=i;
        back(q+1);
    }
}
int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d %d",&n,&k);
    back(1);
    return 0;
}