C111123313121111121111331333133313331333133313331333133313331312233232221   >>    C11112331312111112111133133313331333133313331333133313331333131223323222   <<    C111123313121111121111331333133313331333133313331333133313331312233232223   >>      C111123313121111121111331333133313331333133313331333133313331312233232222   >>