# include <cstdio>
# define MAXN 20
using namespace std;

int sol[MAXN],k,i,n;
void afis(int k)
{
    int i;
    for(i=1; i<=k; ++i)
        printf("%d ", sol[i]);
    printf("\n");
    return;
}
void back(int k)
{
    int i;
    for(i=sol[k-1]+1; i<=n; ++i)
    {
        sol[k]=i;
        afis(k);
        back(k+1);
    }
    return;
}
int main()
{
    freopen("submultimi.in", "r", stdin);
    freopen("submultimi.out", "w", stdout);
    scanf("%d\n", &n);
    sol[0]=0;
    back(1);
    return 0;
}