C11111333133313232233133313331333133313221333133313232213331323311221   >>    C1111133313331323223313331333133313331322133313331323221333132331122   <<    C11111333133313232233133313331333133313221333133313232213331323311223   >>      C11111333133313232233133313331333133313221333133313232213331323311222   >>