C1111133313331323223313331333133313331333131133133313232211233131   >>    C111113331333132322331333133313331333133313113313331323221123313   <<    C1111133313331323223313331333133313331333131133133313232211233133   >>      C1111133313331323223313331333133313331333131133133313232211233132   >>