Businesses may undergo concentration.Logical formLearned from117 sentences. Ozone may undergo concentration.Logical formLearned from117 sentences. Elements may undergo concentrations.Logical formLearned from116 sentences. A degree can be constituted-of-or-filled-with concentration.Logical formLearned from116 sentences. Immigrants may undergo concentrations.Logical formLearned from116 sentences. Chemicals may undergo concentrations.Logical formLearned from116 sentences. Lapses can be in concentration.Logical formLearned from111 sentences. (Methane gas) may undergo concentrations.Logical formLearned from111 sentences. Courses may undergo concentration.Logical formLearned from110 sentences. Concentrations can be intracellular.Logical formLearned from110 sentences. Concentration may pertain-to a country.Logical formLearned from109 sentences. (Carbon monoxide) may undergo concentrations.Logical formLearned from108 sentences. A male may lose concentration.Logical formLearned from106 sentences. Methane may undergo concentration.Logical formLearned from106 sentences. Gas may undergo concentrations.Logical formLearned from105 sentences.