C111123313121111121111331333133313331333112221211111133133313233122332321   >>    C11112331312111112111133133313331333133311222121111113313331323312233232   <<    C111123313121111121111331333133313331333112221211111133133313233122332323   >>      C111123313121111121111331333133313331333112221211111133133313233122332322   >>