# include <cstdio>
using namespace std;
int N,st[21],p;
bool ap[21];
void back(int k)
{
    int x;
    if(k==p)
    {
        for(x=1;x<=p;++x)
            printf("%d ",st[x]);
        printf("\n");
    }
    else
    {
        for(x=st[k]+1;x<=N;++x)
        {
            st[k+1]=x;
            back(k+1);
        }
    }
}
int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d %d",&N,&p);
    back(0);
    return 0;
}