#include <iostream>
#include <cstdio>

using namespace std;

int N,K;
int A[20];
int vis[20];

void back(int k) {
	if (k == K) {
		for (int i=0;i<K;++i) printf("%d ",A[i]);
		printf("\n");
	} else {
		for (int i=A[k-1]+1;i<=N;++i) {
				A[k] = i;
				back(k + 1);
		}
	}
}

int main() {
	freopen("combinari.in","r",stdin);
	freopen("combinari.out","w",stdout);
	
	scanf("%d%d",&N,&K);
	for (int i=1;i<=(N-K+1);++i) {
		A[0] = i;
		back(1);
	}
	
	fclose(stdin);
	fclose(stdout);
	return 0;
}