A (learning curve) may undergo a start.Logical formLearned from4 sentences. A (decline curve) may show a decline.Logical formLearned from4 sentences. A curve may undergo a removal.Logical formLearned from4 sentences. A step can be behind a curve.Logical formLearned from4 sentences. A curve may pertain-to cheekbones.Logical formLearned from4 sentences. A smooth curve may pertain-to a cheek.Logical formLearned from4 sentences. A (demand curve) can be nonlinear.Logical formLearned from4 sentences. A (supply curve) may shift to the right.Logical formLearned from4 sentences. Curves may disappear.Logical formLearned from4 sentences. Areas can be under a normal curve.Logical formLearned from4 sentences. A (calibration curve) can be universal.Logical formLearned from4 sentences. A curve can be ripe.Logical formLearned from4 sentences. A (curve framework) may pertain-to a person.Logical formLearned from4 sentences. Critics may pertain-to a curve.Logical formLearned from4 sentences. An explanation may pertain-to a curve.Logical formLearned from4 sentences.