Swaps can be hollow.Logical formLearned from3 sentences. Instruments can be hollow.Logical formLearned from3 sentences. An approach can be hollow.Logical formLearned from3 sentences. A triumph can be hollow.Logical formLearned from3 sentences. A (steel shaft) can be hollow.Logical formLearned from3 sentences. A figurine can be hollow.Logical formLearned from2 sentences. A (battle cry) can be hollow.Logical formLearned from2 sentences. A boxing can be hollow.Logical formLearned from2 sentences. Winnings can be hollow.Logical formLearned from2 sentences. Lofty ideals may ring hollow.Logical formLearned from2 sentences. A bomb may be planted in a hollow tree.Logical formLearned from2 sentences. A promise may sound hollow.Logical formLearned from2 sentences. A box can be hollow.Logical formLearned from2 sentences. Rhizomes can be hollow.Logical formLearned from2 sentences. A trumpet can be hollow.Logical formLearned from2 sentences.