# include <fstream>
# define DIM 20
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int v[DIM],n;
void back(int k){
    for(int i=1;i<k;i++)
        fout<<v[i]<<" ";
    if(k>1)
        fout<<"\n";
    for(int i=v[k-1]+1;i<=n;i++){
        v[k]=i;
        back(k+1);
    }
}
int main () {
    fin>>n;
    back(1);
    return 0;
}