#include <cstdio>
FILE *f=fopen("submultimi.in","r");
FILE *g=fopen("submultimi.out","w");
using namespace std;
int v[20],n;
void afish(int k)
{
    for(int i=1;i<=k;++i)fprintf(g,"%d ",v[i]);
    fprintf(g,"\n");
}
void back(int k)
{
    for(v[k]=v[k-1]+1;v[k]<=n;++v[k])
    {
        afish(k);
        back(k+1);
    }
}
int main()
{
    fscanf(f,"%d",&n);
    back(1);
    return 0;
}