#include<bits/stdc++.h>
using namespace std;
int main(){
int n;
cin>>n;
long long int arr[n];
for(int i=0;i<n;i++){
cin>>arr[i];
}
vector<long long>v;
for(int i=0;i<n;i++){
for(int j=i+1;j<n;j++){
v.push_back(arr[i]& arr[j]);
}
}
for(int i=0;i<v.size();i++){
cout<<v[i]<<" ";
}
}
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