A fist may tighten.Logical formLearned from17 sentences. A circle may tighten.Logical formLearned from17 sentences. Jaw may tighten.Logical formLearned from17 sentences. A male may tighten a fist.Logical formLearned from17 sentences. Arms may be tightened around a female.Logical formLearned from17 sentences. Muscles may tighten around a cock.Logical formLearned from17 sentences. A (master grip) may tighten.Logical formLearned from17 sentences. A groin may tighten.Logical formLearned from17 sentences. Authorities may tighten control.Logical formLearned from17 sentences. A country may tighten regulations.Logical formLearned from17 sentences. Security may be tightened to levels.Logical formLearned from17 sentences. A squeeze may tighten.Logical formLearned from17 sentences. A bank may tighten conditions.Logical formLearned from17 sentences. A female may tighten a jaw.Logical formLearned from16 sentences. Lips may tighten.Logical formLearned from16 sentences.