Fingers may tighten.Logical formLearned from125 sentences. A hold may tighten.Logical formLearned from124 sentences. A world-city may tighten security.Logical formLearned from122 sentences. A country may tighten restrictions.Logical formLearned from121 sentences. A country may tighten a blockade.Logical formLearned from114 sentences. A person may tighten.Logical formLearned from110 sentences. Consumers may tighten (purse strings).Logical formLearned from105 sentences. A (labor market) may tighten.Logical formLearned from102 sentences. (Credit markets) may tighten.Logical formLearned from102 sentences. Persons may tighten belts.Logical formLearned from100 sentences. A country may tighten a grip.Logical formLearned from98 sentences. Security may tighten.Logical formLearned from96 sentences. A mouth may tighten.Logical formLearned from95 sentences. An arm may tighten.Logical formLearned from94 sentences. A mouth may be tightened.Logical formLearned from92 sentences.