#include <stdio.h>

#define FOR(i, a, b) for(int i = (int)(a); i < (int)(b); ++i)

int N, K;
int st[20];

void back( int k, int Max )
{
	if (k == K)
	{
		FOR(i, 0, K)
			printf("%d ", st[i]);
		printf("\n");
		return;
	}

	for (int i = Max + 1; i <= N - K + k + 1; i++)
		st[k] = i,
		back( k + 1, i );
}

int main()
{
	freopen("combinari.in", "rt", stdin);
	freopen("combinari.out", "wt", stdout);

	scanf("%d %d", &N, &K);
	back(0, 0);

	return 0;
}