class MyInheritor extends A {

}

abstract class A {}

class B1 extends A {}
class C11 extends B1 {}
class C12 extends B1 {}

class B2 extends A {}
class C21 extends B2 {}
class C22 extends B2 {}

class B3 extends A {}
class C31 extends B3 {}
class C32 extends B3 {}

class B4 extends A {}
class C41 extends B4 {}
class C42 extends B4 {}

class B5 extends A {}
class C51 extends B5 {}
class C52 extends B5 {}

class B6 extends A {}
class C61 extends B6 {}
class C62 extends B6 {}

class B7 extends A {}
class C71 extends B7 {}
class C72 extends B7 {}

class B8 extends A {}
class C81 extends B8 {}
class C82 extends B8 {}