Groups may undergo concentration.Logical formLearned from26 sentences. Concentration can be calculated.Logical formLearned from26 sentences. Analyte may undergo concentration.Logical formLearned from26 sentences. A relationship can be between concentration.Logical formLearned from26 sentences. Concentrations can be constituent.Logical formLearned from26 sentences. Cocaine may undergo concentrations.Logical formLearned from26 sentences. Minorities may undergo concentration.Logical formLearned from26 sentences. Atmospheric (carbon dioxide) may undergo concentrations.Logical formLearned from26 sentences. Variations can be in concentrations.Logical formLearned from26 sentences. (Ozone concentrations) can be elevated.Logical formLearned from26 sentences. A male may have concentration.Logical formLearned from26 sentences. Brow may furrow in concentration.Logical formLearned from26 sentences. A female may turn concentration.Logical formLearned from26 sentences. Capital may undergo concentrations.Logical formLearned from26 sentences. Concentration may break.Logical formLearned from26 sentences.