(Eye holes) can be hollow.Logical formLearned from10 sentences. (Eye sockets) can be hollow.Logical formLearned from10 sentences. A bolt can be hollow.Logical formLearned from10 sentences. A dream can be hollow.Logical formLearned from10 sentences. A self can be hollow.Logical formLearned from10 sentences. Arguments can be hollow.Logical formLearned from10 sentences. Wheels can be hollow.Logical formLearned from10 sentences. Lns can be hollow.Logical formLearned from10 sentences. A tubing can be hollow.Logical formLearned from10 sentences. A win can be hollow.Logical formLearned from10 sentences. Feelings can be hollow.Logical formLearned from10 sentences. (Back doors) of apcs can be hollow.Logical formLearned from10 sentences. (Carbon molecules) can be hollow.Logical formLearned from10 sentences. A replica can be hollow.Logical formLearned from10 sentences. A bit can be hollow.Logical formLearned from10 sentences.