C111123313121111121111331333133313331333112221211111133133313232132232311   >>    C11112331312111112111133133313331333133311222121111113313331323213223231   <<    C111123313121111121111331333133313331333112221211111133133313232132232313   >>      C111123313121111121111331333133313331333112221211111133133313232132232312   >>