#include <cstdio>

using namespace std;

int n,a[20];

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

void bak(int k)
{
    for(int i=a[k-1]+1;i<=n;i++)
    {
        a[k]=i;
        afisare(k);
        if(k<n)
            bak(k+1);

    }
}

int main()
{
    freopen("submultimi.in","r",stdin);
    freopen("submultimi.out","w",stdout);
    scanf("%d",&n);
    bak(1);
    return 0;
}