/*
			A
	B				C
D		E

*/

class A {
	fooA() {}
}

class B extends A {
	fooB() {}
}

class C extends A {
	fooC(){}
}

class D extends B {
	fooD() {}
}

class E extends B {
	fooE() {}
}



public class TestInheritanceAcrossLevel {

	public m1(x) {
		x.fooA();
		return x;
	}
	
	public m2(x) {
		x.fooB();
		/*return x;*/
	}
	
	public m3(x) {
		x.fooC();
		/*return x;*/
	}
	
	public m4(x) {
		x.fooD();
		/*return x;*/
	}
	
	public m5(B x) {
		x.fooA();
		return x;
	}
}