C31232233133313221211113313331333133313332321333131133132313232223311211   >>    C3123223313331322121111331333133313331333232133313113313231323222331121   <<    C31232233133313221211113313331333133313332321333131133132313232223311213   >>      C31232233133313221211113313331333133313332321333131133132313232223311212   >>