Best (pop album) can be by a duo.Logical formLearned from4 sentences. A duo may be gained.Logical formLearned from4 sentences. A duo may record some (studio albums).Logical formLearned from4 sentences. A duo can be a choice.Logical formLearned from4 sentences. A male may tour with a duo.Logical formLearned from4 sentences. Duos can be female.Logical formLearned from4 sentences. A duo can be with partner.Logical formLearned from4 sentences. A (comedy duo) may consist of a male.Logical formLearned from4 sentences. (Pop performance) can be by duo.Logical formLearned from4 sentences. A duo may pertain-to a military-or-other-action-organization.Logical formLearned from4 sentences. A duo can be canine.Logical formLearned from4 sentences. A duo may win a game.Logical formLearned from4 sentences. A male may perform as a duo.Logical formLearned from4 sentences. A (debut lp) may pertain-to a duo.Logical formLearned from4 sentences. A duo may tour in a country.Logical formLearned from4 sentences.