A back can be stiff.Logical formLearned from155 sentences. A fight can be stiff.Logical formLearned from151 sentences. Legs can be stiff.Logical formLearned from151 sentences. (Tail feathers) can be stiff.Logical formLearned from146 sentences. A shaft can be stiff.Logical formLearned from133 sentences. Conditions can be stiff.Logical formLearned from133 sentences. Measures can be stiff.Logical formLearned from131 sentences. A warning can be stiff.Logical formLearned from130 sentences. A (price competition) can be stiff.Logical formLearned from127 sentences. A jab can be stiff.Logical formLearned from125 sentences. A person may feel stiff.Logical formLearned from120 sentences. (Prison sentences) can be stiff.Logical formLearned from118 sentences. Necks can be stiff.Logical formLearned from112 sentences. Legs can be stiff.Logical formLearned from108 sentences. Economic sanctions can be stiff.Logical formLearned from108 sentences.