C1231321123223331211111131211113313331333132332131231322121113121   >>    C123132112322333121111113121111331333133313233213123132212111312   <<    C1231321123223331211111131211113313331333132332131231322121113123   >>      C1231321123223331211111131211113313331333132332131231322121113122   >>