A time can be in a (concentration camp).Logical formLearned from4 sentences. Concentration can be in degree.Logical formLearned from4 sentences. Mineral may undergo concentration.Logical formLearned from4 sentences. (Shopping centers) may undergo concentration.Logical formLearned from4 sentences. (Pep concentrations) can be physiological.Logical formLearned from4 sentences. Petroglyphs may undergo concentrations.Logical formLearned from4 sentences. A subcamp of (concentration camp) can be in a town.Logical formLearned from4 sentences. Conditions can be at a (concentration camp).Logical formLearned from4 sentences. Projects may undergo concentrations.Logical formLearned from4 sentences. Students may select from some concentrations.Logical formLearned from4 sentences. A male may be imprisoned in concentration.Logical formLearned from4 sentences. Some days may establish (concentration camp).Logical formLearned from4 sentences. Concentrations can be in a company.Logical formLearned from4 sentences. Concentration can be serene.Logical formLearned from4 sentences. Concentrations of uranium may occur in some substances.Logical formLearned from4 sentences.