Defenses can be sturdy.Logical formLearned from6 sentences. A piano can be sturdy.Logical formLearned from6 sentences. A (fan base) can be sturdy.Logical formLearned from6 sentences. (Juice glasses) can be sturdy.Logical formLearned from6 sentences. A rocker can be sturdy.Logical formLearned from6 sentences. A (bass line) can be sturdy.Logical formLearned from6 sentences. A rhythm can be sturdy.Logical formLearned from6 sentences. Windows can be sturdy.Logical formLearned from6 sentences. (Fruit trees) can be sturdy.Logical formLearned from6 sentences. A (sailor cotton) can be sturdy.Logical formLearned from6 sentences. An orifice can be sturdy.Logical formLearned from6 sentences. Pulleys can be sturdy.Logical formLearned from6 sentences. (Wood tables) can be sturdy.Logical formLearned from6 sentences. A father can be sturdy.Logical formLearned from6 sentences. A (factory town) can be sturdy.Logical formLearned from6 sentences.