C1111133313331323223313331333133313331323133313331311331333223211111333131331   >>    C111113331333132322331333133313331333132313331333131133133322321111133313133   <<    C1111133313331323223313331333133313331323133313331311331333223211111333131333   >>      C1111133313331323223313331333133313331323133313331311331333223211111333131332   >>