#include <stdio.h>
using namespace std;
int n,k;
int A[21];
FILE *f,*g;

void bt(int v)
{
	int i;
	if (v==k)
	{
		for (i=1;i<=k;i++)
			fprintf(g,"%d ",A[i]);
		fprintf(g,"\n");
	}
	else
	{
		for (i=A[v]+1;i<=n;i++)
		{
			A[v+1]=i;
			bt(v+1);
		}
	}
}

int main()
{
	f=fopen("combinari.in","r");
	g=fopen("combinari.out","w");
	fscanf(f,"%d %d",&n,&k);
	bt(0);
	fclose(f);
	fclose(g);
	return 0;
}