#include <iostream>
#include <cstdio>

using namespace std;

int n,x[20];

void back(int k)
{
    for(int i=1;i<k;i++)
        printf("%d ",x[i]);
    if(k!=1)
    printf("\n");

    for(x[k]=x[k-1]+1;x[k]<=n;x[k]++)
        back(k+1);
}

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