A number may be placed on a spine of a book.Logical formLearned from6 sentences. A bone may pertain-to a spine.Logical formLearned from6 sentences. A spine may pertain-to a binder.Logical formLearned from6 sentences. A spine may pertain-to an animal.Logical formLearned from6 sentences. A cervical spine may undergo fractures.Logical formLearned from6 sentences. Spines can be modified.Logical formLearned from6 sentences. Spines can be moveable.Logical formLearned from6 sentences. A spine may lengthen.Logical formLearned from6 sentences. A spine may undergo a (compression fracture).Logical formLearned from6 sentences. A female may stiffen a spine.Logical formLearned from6 sentences. A shape may pertain-to (arm spines).Logical formLearned from6 sentences. A spine may undergo injuries.Logical formLearned from6 sentences. A spine can be jagged.Logical formLearned from6 sentences. Some spines may be merged.Logical formLearned from6 sentences. A spine may undergo protection.Logical formLearned from6 sentences.