C111123313121111121111331323133313331333132333133313121111331333133313232121221   >>    C11112331312111112111133132313331333133313233313331312111133133313331323212122   <<    C111123313121111121111331323133313331333132333133313121111331333133313232121223   >>      C111123313121111121111331323133313331333132333133313121111331333133313232121222   >>