Authorities may tighten security.Logical formLearned from59 sentences. Skin may tighten.Logical formLearned from59 sentences. A jaw may be tightened.Logical formLearned from59 sentences. A male may tighten a hand.Logical formLearned from56 sentences. A female may tighten arms.Logical formLearned from55 sentences. Companies may tighten belts.Logical formLearned from54 sentences. A government may tighten restrictions.Logical formLearned from53 sentences. Persons may be tightened.Logical formLearned from53 sentences. A throat may be tightened.Logical formLearned from51 sentences. A hand may tighten in hair.Logical formLearned from51 sentences. Screws may be tightened.Logical formLearned from50 sentences. An arm may tighten around a waist.Logical formLearned from49 sentences. Monetary policy may be tightened.Logical formLearned from48 sentences. A finger may tighten on a trigger.Logical formLearned from48 sentences. Braces may be tightened.Logical formLearned from48 sentences.