A grip may tighten.Logical formLearned from995 sentences. A male may tighten a grip.Logical formLearned from827 sentences. A race may tighten.Logical formLearned from676 sentences. Security may be tightened.Logical formLearned from603 sentences. Police may tighten security.Logical formLearned from481 sentences. A country may tighten security.Logical formLearned from461 sentences. A chest may tighten.Logical formLearned from449 sentences. Authorities may tighten security.Logical formLearned from360 sentences. A throat may tighten.Logical formLearned from352 sentences. A jaw may tighten.Logical formLearned from335 sentences. A male may tighten a hold.Logical formLearned from327 sentences. Muscles may tighten.Logical formLearned from289 sentences. A female may tighten a grip.Logical formLearned from271 sentences. Consumers may tighten belts.Logical formLearned from245 sentences. A stomach may tighten.Logical formLearned from222 sentences.