C1231321123223331211111131211113313331333132332132333233132132211   >>    C123132112322333121111113121111331333133313233213233323313213221   <<    C1231321123223331211111131211113313331333132332132333233132132213   >>      C1231321123223331211111131211113313331333132332132333233132132212   >>