C111123313121111121111331333133313331333131233133313113313331323211331313223331   >>    C11112331312111112111133133313331333133313123313331311331333132321133131322333   <<    C111123313121111121111331333133313331333131233133313113313331323211331313223333   >>      C111123313121111121111331333133313331333131233133313113313331323211331313223332   >>