(Spiral striations) can be slender.Logical formLearned from3 sentences. A surface of a spire may be marked by (spiral striations).Logical formLearned from3 sentences. Some (spiral series) can be constituted-of-or-filled-with pits.Logical formLearned from3 sentences. Whorls may be marked by (spiral cords).Logical formLearned from3 sentences. (Spiral lines) can be slender.Logical formLearned from3 sentences. A center may pertain-to a spiral.Logical formLearned from3 sentences. Ribs may be crossed by some (spiral cords).Logical formLearned from3 sentences. A periphery of a (body whorl) may be marked by a (spiral cord).Logical formLearned from3 sentences. Spaces can be between (spiral keels).Logical formLearned from3 sentences. A periphery of a (body whorl) may be marked by a (spiral keel).Logical formLearned from3 sentences. Some (spiral keels) may divide a space.Logical formLearned from3 sentences. A (spiral cord) can be strong.Logical formLearned from3 sentences. (Spiral keels) can be narrow.Logical formLearned from3 sentences. A spiral can be clockwise.Logical formLearned from3 sentences. An inflorescence can be a spiral of some flowers.Logical formLearned from3 sentences.