#include <stdio.h>

#define in "combinari.in"
#define out "combinari.out"
#define NMAX 		21

int N, K;
int S[NMAX];

void Back(int lng)
{
	int i;
	if (lng == K) {
		for (i = 1; i <= K; ++i)
			printf("%d ", S[i]);
		printf("\n");
	}
	else {

		for (i = S[lng]+1; i <= N; ++i) {
			S[lng+1] = i;
			Back(lng+1);
		}
	}
}


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

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

	return 0;
}