A duo can be charming.Logical formLearned from15 sentences. Duo may grumble.Logical formLearned from15 sentences. Persons can be a dynamic duo.Logical formLearned from15 sentences. A duo can be cute.Logical formLearned from15 sentences. Files may be stored on (duo digital-media cards).Logical formLearned from15 sentences. A duo may produce.Logical formLearned from15 sentences. A chest may pertain-to duo.Logical formLearned from15 sentences. A (pro duo) may pertain-to a us-state.Logical formLearned from15 sentences. A duo can be friends.Logical formLearned from15 sentences. A person may form a duo.Logical formLearned from15 sentences. A (foreign-policy duo) may pertain-to a US-president.Logical formLearned from15 sentences. A duo can be black.Logical formLearned from15 sentences. A record may pertain-to a duo.Logical formLearned from15 sentences. A duo can be quirky.Logical formLearned from15 sentences. A duo can be lethal.Logical formLearned from15 sentences.