Stems can be stiff.Logical formLearned from48 sentences. A walk can be stiff.Logical formLearned from48 sentences. A battle can be stiff.Logical formLearned from48 sentences. Nipples can be stiff.Logical formLearned from48 sentences. Needles can be stiff.Logical formLearned from48 sentences. Controls can be stiff.Logical formLearned from48 sentences. A bow can be stiff.Logical formLearned from48 sentences. A knee can be stiff.Logical formLearned from47 sentences. Persons can be stiff.Logical formLearned from47 sentences. Protests can be stiff.Logical formLearned from46 sentences. Penalties can be stiff.Logical formLearned from46 sentences. Suits can be stiff.Logical formLearned from46 sentences. Hands can be stiff.Logical formLearned from46 sentences. A protest can be stiff.Logical formLearned from46 sentences. A cardboard can be stiff.Logical formLearned from46 sentences.