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#include <bits/stdc++.h>
using namespace std;
const string file="submultimi";
ifstream f(file+".in");
ofstream g(file+".out");
//#define f cin
//#define g cout
#define mod 666013
int n,x[20],p[20],k;
void afis(int k){
for(int i=1; i<=k; ++i) g<<x[i]<<' ';
g<<'\n';
}
void back(int k){
for(int i=x[k-1]+1; i<=n; ++i){
x[k]=i;
if(k<=n){
afis(k);
back(k+1);
}
}
}
int main(){
f>>n;
back(1);
return 0;
}