C222133313331333131123313231333133313331333132332111112111111222331121   >>    C22213331333133313112331323133313331333133313233211111211111122233112   <<    C222133313331333131123313231333133313331333132332111112111111222331123   >>      C222133313331333131123313231333133313331333132332111112111111222331122   >>