#include <stdio.h>

int n,k,v[19];


void kiir(){
int i;

for(i=1;i<=k;i++){printf("%d ",v[i]);}
printf("\n");

}

void back(int t){
int i;

for(i=v[t-1]+1;i<=n;i++){
v[t]=i;

if(t==k){kiir();}else{back(t+1);}
}

}


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

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

	back(1);


	return 0;}