#include <fstream>
using namespace std;
int n, x[20];

ifstream fin("submultimi.in");
ofstream fout("submultimi.out");

void back(int k){
    int i;
    if(k != 1 && k <= n+1){
        for(i=1;i<k;i++){
            fout<<x[i]<<" ";
        }
        fout<<"\n";
    }
    for(i=x[k-1]+1;i<=n;i++){
        x[k] = i;
        back(k+1);
    }
}

int main(){
    fin>>n;
    back(1);
}