#include<stdio.h>
int n,v[20];

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

void back(int p,int val)
{
    int i;
    v[p]=val;
    afis(p);
    if(val!=n)
    for(i=val+1;i<=n;++i)
    {
        back(p+1,i);
    }
}

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