Concentration can be intense.Logical formLearned from27 sentences. Poor persons may undergo concentration.Logical formLearned from27 sentences. A country may undergo (concentration camps).Logical formLearned from27 sentences. Powers may undergo concentration.Logical formLearned from27 sentences. Schools can be with concentrations of students.Logical formLearned from27 sentences. Part may pertain-to concentration.Logical formLearned from27 sentences. Hydrocarbons may undergo concentration.Logical formLearned from27 sentences. Concentration can be in water.Logical formLearned from27 sentences. Fish may undergo concentrations.Logical formLearned from27 sentences. Commandant may pertain-to a (concentration camp).Logical formLearned from27 sentences. Concentration can be a problem.Logical formLearned from27 sentences. Suspended solids may undergo concentration.Logical formLearned from26 sentences. Concentration can be selected.Logical formLearned from26 sentences. Concentration can be powerful.Logical formLearned from26 sentences. Concentrations can be elevated.Logical formLearned from26 sentences.