A tone can be tough.Logical formLearned from19 sentences. A tone may undergo a hardening.Logical formLearned from19 sentences. A tone can be constructive.Logical formLearned from19 sentences. A tone can be with a country.Logical formLearned from19 sentences. Tones can be gloomy.Logical formLearned from18 sentences. A tone may pertain-to a guitar.Logical formLearned from18 sentences. A tone can be tranquil.Logical formLearned from18 sentences. Tones can be brilliant.Logical formLearned from18 sentences. Tones may be heard.Logical formLearned from18 sentences. A tone can be constituted-of-or-filled-with sympathy.Logical formLearned from18 sentences. Tones can be realistic.Logical formLearned from18 sentences. A tone may pertain-to a policy.Logical formLearned from18 sentences. A tone can be varying.Logical formLearned from18 sentences. A tone can be comfortable.Logical formLearned from18 sentences. A tone can be eager.Logical formLearned from18 sentences.