C111123313121111121111331333133313331333112221211111133133313223111211   >>    C11112331312111112111133133313331333133311222121111113313331322311121   <<    C111123313121111121111331333133313331333112221211111133133313223111213   >>      C111123313121111121111331333133313331333112221211111133133313223111212   >>