#include<iostream>
#include<stdio.h>
FILE *f,*g;
int st[50],k,n;
void back(int p)
{
	int pval;
	for(pval=st[p-1];pval<=n;pval++)
	{
		st[p]=pval;
		if(p==k)
		{
			for(int i=1;i<=k;i++)
				fprintf(g,"%d ",st[i]);
			fprintf(g,"\n");
		}
		else back(p+1);
	}
}
void main()
{
	st[0]=0;
	f=fopen("combinari.in","r");
	g=fopen("combinari.out","w");
	fscanf(f,"%d %d",&n,&k);
	back(1);
}