A duo may start.Logical formLearned from65 sentences. A duo can be czech.Logical formLearned from64 sentences. (Duo jets) can be flat.Logical formLearned from63 sentences. A debut may pertain-to a duo.Logical formLearned from62 sentences. A duo may pertain-to a language.Logical formLearned from61 sentences. Duo may pertain-to a year.Logical formLearned from60 sentences. Duo may shake a head.Logical formLearned from60 sentences. A resolution may be made possible by a (core duo).Logical formLearned from60 sentences. A duo can be with vocals.Logical formLearned from60 sentences. A (core duo) can be revolutionary.Logical formLearned from59 sentences. A duo can be with a female.Logical formLearned from58 sentences. Best (rock performance) can be by a duo.Logical formLearned from58 sentences. Songs may pertain-to a duo.Logical formLearned from57 sentences. A slot can be for (memory stick duo).Logical formLearned from57 sentences. A duo may be released.Logical formLearned from55 sentences.