include<iostream>
#include<vector>
using namespace std;

int n;
vector<int> chosen;

void C(int x){
    if(x==n+1){

        for(int i=0;i<chosen.size();i++) printf("%d ",chosen[i]);
        printf("\n");

        return;
    }
    //printf("into unchoose %d\n",x+1);
    C(x+1);

    //printf("int choose %d\n",x+1);
    chosen.push_back(x);
    C(x+1);
    chosen.pop_back();
    //printf("%d,over\n",x);
    return;
}

int main(){
    scanf("%d",&n);
    C(1);
    return 0;

}