#include<fstream>
using namespace std;
int n,i,j,m,a[20];
void gen(int k)
{
	int i,j;
	if(k==m+1)
	{
		for(j=1;j<=m;++j)
			printf("%d ",a[j]);
		printf("\n");
	}
	
	else
		for(i=a[k-1]+1;i<=n;++i)
		{
			a[k]=i;
			gen(k+1);
		}
}

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