C31232233133313221211113313331333133313113311331333133323213331312311   >>    C3123223313331322121111331333133313331311331133133313332321333131231   <<    C31232233133313221211113313331333133313113311331333133323213331312313   >>      C31232233133313221211113313331333133313113311331333133323213331312312   >>