A label can be stiff.Logical formLearned from22 sentences. Rods can be stiff.Logical formLearned from22 sentences. An enough can be stiff.Logical formLearned from22 sentences. Boots can be stiff.Logical formLearned from22 sentences. A female may look stiff.Logical formLearned from22 sentences. An attitude can be stiff.Logical formLearned from22 sentences. Red (blood cells) can be stiff.Logical formLearned from22 sentences. A language can be stiff.Logical formLearned from22 sentences. A hike can be stiff.Logical formLearned from22 sentences. Mandatory sentences can be stiff.Logical formLearned from22 sentences. A style can be stiff.Logical formLearned from22 sentences. A message can be stiff.Logical formLearned from22 sentences. (Austerity measures) can be stiff.Logical formLearned from22 sentences. A (head wind) can be stiff.Logical formLearned from22 sentences. A retaliation can be stiff.Logical formLearned from22 sentences.