#import<fstream>
std::ifstream f("combinari.in");std::ofstream g("combinari.out");int N,K,x[19],i;void w(){for(i=1;i<=K;++i)g<<x[i]<<' ';g<<'\n';}void b(int k){if(k==K+1)w();else for(int i=x[k-1]+1;i<=N;++i)x[k]=i,b(k+1);}int main(){f>>N>>K;b(1);}