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#include<fstream>
#include<algorithm>
using namespace std;
ifstream cin("monezi.in");
ofstream cout("monezi.out");
int n, v[20];
void afisare(int pan){
for(int i=1; i<=pan; ++i) cout<<v[i]<<" ";
cout<<'\n';
}
void submultimi(int k, int nmbr, int r){
for(int i=r; i<=n && k+nmbr-i<=nmbr + 2; ++i){
v[k]=i;
if(k==nmbr) afisare(nmbr);
else{
submultimi(k+1, nmbr, i+1);
}
}
}
int main(){
cin>>n;
// cout<<'\n';
// for(int i=1; i<=n; ++i) cout<<m[i]<<" ";
for(int i=1; i<=n; ++i) submultimi(1,i,1);
return 0;
}