C11111333133313232233133313331333131133132313311211111213331333132313223311   >>    C1111133313331323223313331333133313113313231331121111121333133313231322331   <<    C11111333133313232233133313331333131133132313311211111213331333132313223313   >>      C11111333133313232233133313331333131133132313311211111213331333132313223312   >>