C312312111111331312111133133313331333133313231333133112111133132322333121   >>    C31231211111133131211113313331333133313331323133313311211113313232233312   <<    C312312111111331312111133133313331333133313231333133112111133132322333123   >>      C312312111111331312111133133313331333133313231333133112111133132322333122   >>