C111123313121111121111331333133313331333133313331333131133132313331212321   >>    C11112331312111112111133133313331333133313331333133313113313231333121232   <<    C111123313121111121111331333133313331333133313331333131133132313331212323   >>      C111123313121111121111331333133313331333133313331333131133132313331212322   >>