C111123313121111121111331333133313331333131233133313113313232313231   >>    C11112331312111112111133133313331333133313123313331311331323231323   <<    C111123313121111121111331333133313331333131233133313113313232313233   >>      C111123313121111121111331333133313331333131233133313113313232313232   >>