#include <stdio.h>

int n, m, c[20];

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

void GenComb(int k)
{
	if (k-1==m)
		Out();
	else
	{
		for (int i=c[k-1]+1; i<=n-m+k; ++i)
		{
			c[k]=i;
			GenComb(k+1);
		}
	}
}

int main()
{
	freopen("combinari.in","r",stdin);
	freopen("combinari.out","w",stdout);

	scanf("%d%d", &n, &m);

	GenComb(1);

	return 0;
}