A (learning curve) can be brutal.Logical formLearned from3 sentences. A (cost curve) can be steep.Logical formLearned from3 sentences. Curves may pertain-to stairs.Logical formLearned from3 sentences. A curve may pertain-to a trail.Logical formLearned from3 sentences. Curve may end.Logical formLearned from3 sentences. A curve may pertain-to a pen.Logical formLearned from3 sentences. Changes can be in a (population curve).Logical formLearned from3 sentences. A person may notice a curve.Logical formLearned from3 sentences. A (subway train) may go around a curve.Logical formLearned from3 sentences. A curve can be beloved.Logical formLearned from3 sentences. Smooth curves can be nice.Logical formLearned from3 sentences. A course may reduce a curve.Logical formLearned from3 sentences. A person may get results with a (learning curve).Logical formLearned from3 sentences. A curve may pertain-to a scalp.Logical formLearned from3 sentences. A commander-in-chief may get a curve.Logical formLearned from3 sentences.