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class A
{
public A()
{
System.out.println("I am a");
}
public static void main(String arg[])
{
A a = new A();
//B b = new B();
C c = new C();
D d = new D();
}
class B
{
public B()
{
System.out.println("I am b");
}
}
static class C
{
public C()
{
System.out.println("I am c");
}
}
}
class D
{
public D()
{
System.out.println("I am d");
}
}