C1111133313331323223313331333133313331333131133133313331121132121   >>    C111113331333132322331333133313331333133313113313331333112113212   <<    C1111133313331323223313331333133313331333131133133313331121132123   >>      C1111133313331323223313331333133313331333131133133313331121132122   >>