Races may tighten.Logical formLearned from12 sentences. A bill may tighten sanctions.Logical formLearned from12 sentences. (Government troops) may tighten a grip.Logical formLearned from12 sentences. Margins may tighten.Logical formLearned from12 sentences. Features may tighten.Logical formLearned from12 sentences. Laws may be tightened.Logical formLearned from12 sentences. Security may be tightened in an area.Logical formLearned from12 sentences. Forces may tighten a grip.Logical formLearned from12 sentences. A person may tighten belts.Logical formLearned from12 sentences. A government may tighten laws.Logical formLearned from12 sentences. A plan may be aimed at tightenning security.Logical formLearned from12 sentences. Security may be tightened at installations.Logical formLearned from12 sentences. A race may be tightened.Logical formLearned from12 sentences. Organizers may tighten security.Logical formLearned from12 sentences. A male may tighten public spending.Logical formLearned from12 sentences.