#include <fstream>
#include <cstring>
using namespace std;
ifstream in("submultimi.in");
ofstream out("submultimi.out");
int n,V[20];
void write(int x){
    for(int i=1;i<=x;i++){
        out<<V[i]<<" ";
    }
    out<<"\n";
}
void bkt(int dgt){
    for(int i=V[dgt-1]+1;i<=n;i++){
            V[dgt]=i;
            write(dgt);
            bkt(dgt+1);
    }
}
int main()
{
    in>>n;
    bkt(1);
    return 0;
}