C111123313121111121111331333133313331333131233133313113313233313222313233311   >>    C11112331312111112111133133313331333133313123313331311331323331322231323331   <<    C111123313121111121111331333133313331333131233133313113313233313222313233313   >>      C111123313121111121111331333133313331333131233133313113313233313222313233312   >>