#include <stdio.h>
int n,k,v[22];

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

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