C111123313121111121111331333133313331333112221211111133133313232223213321333121   >>    C11112331312111112111133133313331333133311222121111113313331323222321332133312   <<    C111123313121111121111331333133313331333112221211111133133313232223213321333123   >>      C111123313121111121111331333133313331333112221211111133133313232223213321333122   >>