C3123223313331322121111331333133313331333121211113313121111123231333121   >>    C312322331333132212111133133313331333133312121111331312111112323133312   <<    C3123223313331322121111331333133313331333121211113313121111123231333123   >>      C3123223313331322121111331333133313331333121211113313121111123231333122   >>