order of constructor and destructor in multilevel costructor

order of constructor and destructor in multilevel costructor:

#include <iostream>
using namespace std;
class base
{
public:
base()
{
cout<<"base 1 constructor called\n";
}
~base()
{
cout<<"base 1 destructor called\n";
}
};
class base2 :public base
{
public:
base2()
{
cout<<"base 2 constructor called\n";
}
~base2()
{
cout<<"base 2 destructor called\n";
}
};
class base3 :public base2
{
public:
base3()
{
cout<<"base 3 constructor called\n";
}
~base3()
{
cout<<"base 3 destructor called\n";
}
solution:

};
int main()
{
base3 obj;
}

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