C11111333133313232233133313331333131133132313311211111211113311223131   >>    C1111133313331323223313331333133313113313231331121111121111331122313   <<    C11111333133313232233133313331333131133132313311211111211113311223133   >>      C11111333133313232233133313331333131133132313311211111211113311223132   >>