#include<cstdio>
int n,x;
int st[19];
void back(int k)
    {if(k==x+1)
        {int i;
        for(i=1;i<=x;i++)
            printf("%d ",st[i]);
        printf("\n");
        }
    else
        {int i;
        for(i=st[k-1]+1;i<=n;i++)
            {st[k]=i;
            back(k+1);
            }
        }
    }
int main ()
{freopen ("combinari.in","r",stdin);
freopen ("combinari.out","w",stdout);
scanf("%d%d",&n,&x);
back(1);
return 0;
}