C3123223313331322121111331333133313331333121211113311211331333132323112121   >>    C312322331333132212111133133313331333133312121111331121133133313232311212   <<    C3123223313331322121111331333133313331333121211113311211331333132323112123   >>      C3123223313331322121111331333133313331333121211113311211331333132323112122   >>