#include <stdio.h>

int ap[20], a[20];
int n,k;

void back(int lv)
{
	int i;
	if (lv==k+1){
		for (i=1; i<=k; i++)
			printf("%d ",a[i]);
		printf("\n");
	}
	else
		for (i=a[lv-1]+1; i<=n-k+lv; i++)
			if (!ap[i]){
				a[lv]=i;
				ap[i]=1;
				back(lv+1);
				ap[i]=0;
			}
}

int main()
{
	freopen("combinari.in","r",stdin);
	freopen("combinari.out","w",stdout);
	scanf("%d %d",&n,&k);
	back(1);
	fclose(stdin); fclose(stdout);
	return 0;
}