A stick can be stiff.Logical formLearned from2 sentences. Relations can be stiff.Logical formLearned from2 sentences. Stiff upper lip may undergo an association.Logical formLearned from2 sentences. An association of stiff upper lip may come from an idea of duty.Logical formLearned from2 sentences. (Pay raises) can be stiff.Logical formLearned from2 sentences. (Ski bindings) can be stiff.Logical formLearned from2 sentences. Pedals can be stiff.Logical formLearned from2 sentences. A lawyer can be stiff.Logical formLearned from2 sentences. Persons can be stiff.Logical formLearned from2 sentences. (Right hamstrings) can be stiff.Logical formLearned from2 sentences. A (terrorism law) can be stiff.Logical formLearned from2 sentences. A shirt can be stiff.Logical formLearned from2 sentences. An international-political-entity can be stiff.Logical formLearned from2 sentences. (Visa restrictions) can be stiff.Logical formLearned from2 sentences. Exchanges can be stiff.Logical formLearned from2 sentences.