C31232233133313221211113313331333132313232233133313113313232223121   >>    C3123223313331322121111331333133313231323223313331311331323222312   <<    C31232233133313221211113313331333132313232233133313113313232223123   >>      C31232233133313221211113313331333132313232233133313113313232223122   >>