Support may undergo concentration.Logical formLearned from25 sentences. Concentration may wane.Logical formLearned from25 sentences. A male may frown in concentration.Logical formLearned from25 sentences. Loans may undergo concentrations.Logical formLearned from25 sentences. A range can be constituted-of-or-filled-with concentration.Logical formLearned from25 sentences. Concentration can be on a country.Logical formLearned from25 sentences. Concentration can be in a market.Logical formLearned from25 sentences. Poor persons may undergo concentrations.Logical formLearned from25 sentences. Dioxin may undergo concentration.Logical formLearned from25 sentences. Concentrations can be in samples.Logical formLearned from25 sentences. Concentrations may fall.Logical formLearned from25 sentences. Concentration can be parts.Logical formLearned from25 sentences. Concentration may pertain-to a law.Logical formLearned from25 sentences. (Writing positions) may obtain concentration.Logical formLearned from25 sentences. Formaldehyde may undergo concentration.Logical formLearned from25 sentences.