C11111333133313232233133313331333131133132313311211111121111211   >>    C1111133313331323223313331333133313113313231331121111112111121   <<    C11111333133313232233133313331333131133132313311211111121111213   >>      C11111333133313232233133313331333131133132313311211111121111212   >>