#include<stdio.h>
#define maxn 20
using namespace std;

int n;
int x[maxn];

void afis(int k)
{
    for(int i=1;i<=k;i++) printf("%d ",x[i]);
    printf("\n");
}

void back(int k)
{
    if(k>1) afis(k-1);
    if(k>n) return;
    for(int i=x[k-1]+1;i<=n;i++)
    {
        x[k]=i;
        back(k+1);
    }
}

int main()
{
    freopen("submultimi.in","r",stdin);
    freopen("submultimi.out","w",stdout);

    scanf("%d",&n);
    back(1);

    fclose(stdin);
    fclose(stdout);
    return 0;
}