C121213213331322331313331311331312111133131133131133132313331333133313123232311   >>    C12121321333132233131333131133131211113313113313113313231333133313331312323231   <<    C121213213331322331313331311331312111133131133131133132313331333133313123232313   >>      C121213213331322331313331311331312111133131133131133132313331333133313123232312   >>