C31232233133313221211113313331333133313331212111133133313133313113313232213231   >>    C3123223313331322121111331333133313331333121211113313331313331311331323221323   <<    C31232233133313221211113313331333133313331212111133133313133313113313232213233   >>      C31232233133313221211113313331333133313331212111133133313133313113313232213232   >>