#include<cstdio>

using namespace std;

int n,nr = -1;
int st[22];

void BKT()
{
    int i;
    for(i=1;i<=st[0];i++)
        printf("%d ",st[i]);
    if(st[0])
        printf("\n");
    for(i=st[st[0]]+1;i<=n;i++)
    {
        st[++st[0]]=i;
        BKT();
        st[st[0]]=0;
        st[0]--;
    }
}

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