#include <stdio.h>
int n,k,st[19],ok[19],okk;



int back (int p) 
{
	int i;
	if (p==k)
	{
			for (i=1; i<=k; i++) printf("%d ", st[i]);
			printf("\n");
	}
	else for (i=st[p]+1; i<=n; i++)
		{
			st[p+1]=i;
			back(p+1);
		}
}
int main () {
	freopen("combinari.in", "r", stdin);
	freopen("combinari.out", "w", stdout);
	scanf("%d %d", &n,&k);
	back(0);
	return 0;
}