#include <cstdio>

#define file_in "combinari.in"
#define file_out "combinari.out"

int C[30],N,K;

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

int main(){
	
	freopen(file_in,"r",stdin);
	freopen(file_out,"w",stdout);
	
	scanf("%d %d", &N, &K);
	
	back(0);
	return 0;
}