A job can be stiff.Logical formLearned from9 sentences. Ordinary (differential equations) can be stiff.Logical formLearned from9 sentences. Competition may remain stiff.Logical formLearned from9 sentences. An expression can be stiff.Logical formLearned from9 sentences. A feather can be stiff.Logical formLearned from9 sentences. A mix can be stiff.Logical formLearned from9 sentences. A (pricing competition) can be stiff.Logical formLearned from9 sentences. Bows can be stiff.Logical formLearned from9 sentences. A female may stand stiff.Logical formLearned from9 sentences. An elbow can be stiff.Logical formLearned from9 sentences. Punishment can be stiff.Logical formLearned from9 sentences. A lesson can be stiff.Logical formLearned from9 sentences. A (nomination contest) can be stiff.Logical formLearned from9 sentences. A president may look stiff.Logical formLearned from9 sentences. A chase can be stiff.Logical formLearned from9 sentences.