C31232233133313221211113313331333132313232233133313233313113313233331213123121   >>    C3123223313331322121111331333133313231323223313331323331311331323333121312312   <<    C31232233133313221211113313331333132313232233133313233313113313233331213123123   >>      C31232233133313221211113313331333132313232233133313233313113313233331213123122   >>