C3123121111113313121111331333133313223313331333131211113323213321   >>    C312312111111331312111133133313331322331333133313121111332321332   <<    C3123121111113313121111331333133313223313331333131211113323213323   >>      C3123121111113313121111331333133313223313331333131211113323213322   >>