Child classes "inherit from" a base class, and base classes "are inherited by" child classes, but never classes are not "inherited from" another class. The bad grammar is the reason not all the answers you received are solutions to your problem.
Comment on Re: Finding classes which are inherited from a given class
Thanks for the comment, although I have to admit that I'm not clear on what you mean by never classes are not "inherited from" another class. Please clarify.