C312312111111331312111133133313331331121111121111331333132322331121   >>    C31231211111133131211113313331333133112111112111133133313232233112   <<    C312312111111331312111133133313331331121111121111331333132322331123   >>      C312312111111331312111133133313331331121111121111331333132322331122   >>