A crankshaft can be hollow.Logical formLearned from8 sentences. Tears can be hollow.Logical formLearned from8 sentences. Bread may sound hollow.Logical formLearned from8 sentences. A girl can be hollow.Logical formLearned from8 sentences. (Smacker cells) can be hollow.Logical formLearned from8 sentences. Memories can be hollow.Logical formLearned from8 sentences. A stare can be hollow.Logical formLearned from8 sentences. A passage can be hollow.Logical formLearned from8 sentences. A bottom may pertain-to a hollow way.Logical formLearned from8 sentences. Towers can be hollow.Logical formLearned from8 sentences. A play can be hollow.Logical formLearned from8 sentences. A (body electric guitar) can be hollow.Logical formLearned from8 sentences. A guitar can be hollow.Logical formLearned from8 sentences. A drivel can be hollow.Logical formLearned from8 sentences. A position can be hollow.Logical formLearned from8 sentences.