An author can be adjustable.Logical formLearned from7 sentences. Clubs can be adjustable.Logical formLearned from7 sentences. A (number air bed) can be adjustable.Logical formLearned from7 sentences. (Reading lights) can be adjustable.Logical formLearned from7 sentences. A headset can be adjustable.Logical formLearned from7 sentences. An amplitude can be adjustable.Logical formLearned from7 sentences. A (comfort level) can be adjustable.Logical formLearned from7 sentences. A webbing can be adjustable.Logical formLearned from7 sentences. A (strap system) can be adjustable.Logical formLearned from7 sentences. Chairs can be adjustable to a height.Logical formLearned from7 sentences. A mechanism can be adjustable.Logical formLearned from7 sentences. (Back rests) can be adjustable.Logical formLearned from7 sentences. A (ring base) can be adjustable.Logical formLearned from7 sentences. Shoulders can be adjustable.Logical formLearned from7 sentences. A (speed range) can be adjustable.Logical formLearned from7 sentences.