#include<iostream>
#include<cstdio>
using namespace std;
int n,ap[20],st[20];

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

void back(int k)
{
    if(k<=n)
    {
        for(int i=st[k-1]+1;i<=n;++i)
        {
            st[k]=i;
            if(ap[st[k]]==0)
            {
                ap[st[k]]=1;
                tipar(k);
                back(k+1);
            }
            ap[st[k]]=0;
        }
    }
}

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