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


	return 0;
}