#include <cstdio>
using namespace std;
int n,i,a[20],sol[20];
void afis(int k)
{
    for (i=1;i<=k;i++)
        printf("%d ",a[sol[i]]);
    printf("\n");
}
void backk(int k)
{
    int i;
    if (k<=n)
    {
        for (i=sol[k-1]+1;i<=n;i++)
        {
            sol[k]=i;
            afis(k);
            backk(k+1);
        }
    }
}
int main()
{
    freopen("submultimi.in","r",stdin);
    freopen("submultimi.out","w",stdout);
    scanf("%d",&n);
    for (i=1;i<=n;i++)
        a[i]=i;
    backk(1);
}