Elements can be productive.Logical formLearned from40 sentences. Practices can be productive.Logical formLearned from40 sentences. Variety can be productive.Logical formLearned from40 sentences. Classes can be productive.Logical formLearned from40 sentences. Tension can be productive.Logical formLearned from40 sentences. Games can be productive.Logical formLearned from40 sentences. A mood can be productive.Logical formLearned from40 sentences. Structures can be productive.Logical formLearned from39 sentences. An ability can be productive.Logical formLearned from39 sentences. A dialog can be productive.Logical formLearned from39 sentences. A practice can be productive.Logical formLearned from39 sentences. Energies can be productive.Logical formLearned from39 sentences. Actions can be productive.Logical formLearned from39 sentences. (Employment opportunities) can be productive.Logical formLearned from39 sentences. Crops can be productive.Logical formLearned from38 sentences.