An album may show a progression.Logical formLearned from6 sentences. A progression can be unstoppable.Logical formLearned from6 sentences. (Valve disease) may undergo a progression.Logical formLearned from6 sentences. A progression can be fixed.Logical formLearned from6 sentences. A progression can be to a round.Logical formLearned from6 sentences. A factor can be in a progression.Logical formLearned from6 sentences. Aortic stenosis may undergo a progression.Logical formLearned from6 sentences. An (arithmetic progression) can be finite.Logical formLearned from6 sentences. Opportunities may undergo a progression.Logical formLearned from6 sentences. A (chord progression) can be complex.Logical formLearned from6 sentences. Skill may undergo a progression.Logical formLearned from6 sentences. Coronary atherosclerosis may undergo a progression.Logical formLearned from6 sentences. A time can be to (disease progression).Logical formLearned from6 sentences. A year may undergo a progression.Logical formLearned from6 sentences. An (ozone hole) may undergo a progression.Logical formLearned from6 sentences.