#include <cstdio>
long int s[21],n,k;

void back(long int l){
long int i;
	if (l==k){
		for(i=1;i<=k;i++)
			printf("%d ",s[i]);
		printf("\n");
	}
	else {
		for(i=s[l]+1;i<=n;i++) {
			s[l+1]=i;
			back(l+1); 
		}
	}
}
int main(){
	freopen("combinari.in","r",stdin);
	freopen("combinari.out","w",stdout);
	scanf("%d %d",&n,&k);
	back(0);
	return 0;
}