A rate of progression can be variable.Logical formLearned from3 sentences. A step can be in progression.Logical formLearned from3 sentences. An appeal may undergo a progression.Logical formLearned from3 sentences. Predictors can be constituted-of-or-filled-with progression.Logical formLearned from3 sentences. Stages may pertain-to a progression.Logical formLearned from3 sentences. A progression can be to sexual activities.Logical formLearned from3 sentences. Programs may undergo a progression.Logical formLearned from3 sentences. (Chord progressions) can be logical.Logical formLearned from3 sentences. Parts may pertain-to a progression.Logical formLearned from3 sentences. A progression can be through an affinity.Logical formLearned from3 sentences. A concern can be with a law of progression.Logical formLearned from3 sentences. Slides may undergo a progression.Logical formLearned from3 sentences. A progression may pertain-to a war.Logical formLearned from3 sentences. Progression can be into courses.Logical formLearned from3 sentences. A scheme may undergo a progression.Logical formLearned from3 sentences.