#include <stdio.h>

int n, m, v [25];


void print ()
{
	int i;
	for (i=1; i<=m; ++i)
		printf ("%d ", v [i]);
	printf ("\n");
}

void comb (int k)
{
	int c;
	if (k == m+1)
	{
		print ();
		return ;
	}
	for (c=v [k-1]+1; c<=n-(m-k); ++c)
	{
		v [k]=c;
		comb (k+1);
	}
}

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