A staff can be hollow.Logical formLearned from2 sentences. Formalisms can be hollow.Logical formLearned from2 sentences. A fortress can be hollow.Logical formLearned from2 sentences. A hollow back can be to a place.Logical formLearned from2 sentences. A male may follow an edge of a hollow back to a place.Logical formLearned from2 sentences. Manufacturers may produce hollow point.Logical formLearned from2 sentences. A plug can be hollow.Logical formLearned from2 sentences. Statements may ring hollow.Logical formLearned from2 sentences. Hollow trees may undergo protection.Logical formLearned from2 sentences. A male may return to hollow bastion.Logical formLearned from2 sentences. An outline can be hollow.Logical formLearned from2 sentences. A talk may sound hollow.Logical formLearned from2 sentences. A pomp can be hollow.Logical formLearned from2 sentences. A (tindalo wood) can be hollow.Logical formLearned from2 sentences. A foundation can be hollow.Logical formLearned from2 sentences.