#include<stdio.h>
int st[20],n,k;
int back(int p)
{
    int i;
    if(p==k+1)
    {
        for(i=1;i<=k;i++)
        printf("%d ",st[i]);
        printf("\n");
    }else
        for(i=st[p-1]+1;i<=n-k+p;i++)
        {
            st[p]=i;
            back(p+1);
        }
}
int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d%d",&n,&k);
    back(1);
    return 0;
}