#include <fstream>

using namespace std;
int n,v[20],cati;
bool vizitat[20];
ifstream cin("submultimi.in");
ofstream cout("submultimi.out");
void afiseste() {
    for (int i = 0; i < cati; ++i) {
        cout << v[i] << " ";
    }
    cout << "\n";
}
void backtracking(int k,int poz){
    if(k == cati){
        afiseste();
        return;
    }
    for(int i = poz+1;i <= n-cati+k+1;i++){
        if(!vizitat[i]){
            v[k] = i;
            vizitat[i] = true;
            backtracking(k+1,i);
            vizitat[i] = false;
        }
    }
}
int main(){
    cin >> n;
    for(cati = 1;cati <= n;cati++)
        backtracking(0,0);
    return 0;
}