#include <iostream>
#include <vector>
#include<algorithm>
using namespace std;
int main() {
int a, b;
vector<int> xx,yy;
while (cin >> a >> b) { // 注意 while 处理多个 case
if(a==0&&b==0){
if(xx.size()==0){
continue;
}
sort(xx.begin(),xx.end());
sort(yy.begin(),yy.end());
cout<<xx[0]<<" "<<yy[0]<<" "<<*(xx.end()-1)<<" "<<*(yy.end()-1)<<endl;
xx.clear();
yy.clear();
}
else{
xx.push_back(a);
yy.push_back(b);
}
}
}
// 64 位输出请用 printf("%lld")



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