C31232233133313221211113313331333132313232233133313233313113313233331213121   >>    C3123223313331322121111331333133313231323223313331323331311331323333121312   <<    C31232233133313221211113313331333132313232233133313233313113313233331213123   >>      C31232233133313221211113313331333132313232233133313233313113313233331213122   >>