#include <iostream>
#include <stdio.h>
#include <stdlib.h>

using namespace std;

int a[20];
int n;

void print(int sizee){

    for (int i=0; i<sizee; i++){
        printf("%d ", a[i]);
    }

    printf("\n");
}

void backtr(int sizee, int startValue){

    for (int i=startValue; i<=n; i++){
        a[sizee] = i;
        print(sizee+1);

        backtr(sizee+1, i+1);
    }
}

int main()
{
    freopen("submultimi.in", "r", stdin);
    freopen("submultimi.out", "w", stdout);
    scanf("%d", &n);

    backtr(0, 1);

    return 0;
}